If 30 men working 7 hours a day can do a piece of work in 18 days, in how many days will 21 men working 8 hours a day do the same work?
If 30 men working 7 hours a day can do a piece of work in 18 days, in how many days will 21 men working 8 hours a day do the same work?
A and B are two alloys of argentum and brass prepared by mixing metals in proportions 7 : 2 and 7 : 11 respectively. If equal quantities of the two alloys are melted to form a third alloy C, the proportion of argentum and brass in C will be:
A and B are two alloys of argentum and brass prepared by mixing metals in proportions 7 : 2 and 7 : 11 respectively. If equal quantities of the two alloys are melted to form a third alloy C, the proportion of argentum and brass in C will be:
If a, b, c, d are in continued proportion then \(\frac{a-d}{b-c}\). What is the value of x.
If a, b, c, d are in continued proportion then \(\frac{a-d}{b-c}\). What is the value of x.
If 4 examiners can examine a certain number of answer books in 8 days by working 5 hours a day,
LEVEL OF DIFFICULTY (I)
for how many hours a day would 2 examiners have to work in order to examine twice the number of answer books in 20 days?
If 4 examiners can examine a certain number of answer books in 8 days by working 5 hours a day,
LEVEL OF DIFFICULTY (I)
for how many hours a day would 2 examiners have to work in order to examine twice the number of answer books in 20 days?
In a mixture of 40 litres, the ratio of milk and water is 4 : 1. How much water must be added to this mixture so that the ratio of milk and water becomes 2 : 3.?
In a mixture of 40 litres, the ratio of milk and water is 4 : 1. How much water must be added to this mixture so that the ratio of milk and water becomes 2 : 3.?
' 2250 is divided among three friends Amar, Bijoy and Chandra in such a way that 1/6th of Amar's share, 1/4th of Bijoy's share and 2/5th of Chandra's share are equal. Find Amar's share.
' 2250 is divided among three friends Amar, Bijoy and Chandra in such a way that 1/6th of Amar's share, 1/4th of Bijoy's share and 2/5th of Chandra's share are equal. Find Amar's share.
If a, b, c, d are proportional, then (a - b) (a - c)/a = ?
If a, b, c, d are proportional, then (a - b) (a - c)/a = ?
Divide t' 500 among A, B, C and D so that A and B together get thrice as much as C and D together, B gets four times of what C gets and C gets 1.5 times as much as D. Now the value of what B gets is
Divide t' 500 among A, B, C and D so that A and B together get thrice as much as C and D together, B gets four times of what C gets and C gets 1.5 times as much as D. Now the value of what B gets is
A, B, C enter into a partnership. A contributes one-third of the whole capital while B contributes as much as A and C together contribute. If the profit at the end of the year is t' 84,000, how much would each receive?
A, B, C enter into a partnership. A contributes one-third of the whole capital while B contributes as much as A and C together contribute. If the profit at the end of the year is t' 84,000, how much would each receive?
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Divide t' 680 among A, B and C such that A gets 2/3 of what B gets and B gets 1/4th of what C gets. Now the share of C is:
Divide t' 680 among A, B and C such that A gets 2/3 of what B gets and B gets 1/4th of what C gets. Now the share of C is:
The ratio between two numbers is 3 : 4 and their LCM is 180. The first number is:
The ratio between two numbers is 3 : 4 and their LCM is 180. The first number is:
If the ratio of sines of angles of a triangle is 1 : 1 : ,\(\sqrt{2} \) then the ratio of square of the greatest
side to sum of the squares of other two sides is
If the ratio of sines of angles of a triangle is 1 : 1 : ,\(\sqrt{2} \) then the ratio of square of the greatest
side to sum of the squares of other two sides is
A crew can row a certain course up the stream in 84 minutes; they can row the same course down stream in 9 minutes less than they can row it in still water. How long would they take to row down with the stream.
A crew can row a certain course up the stream in 84 minutes; they can row the same course down stream in 9 minutes less than they can row it in still water. How long would they take to row down with the stream.
The students in three batches at Mindworkzz are in the ratio 2 : 3 : 5. If 20 students are increased in each batch, the ratio changes to 4 : 5 : 7. The total number of students in the three batches before the increases were
The students in three batches at Mindworkzz are in the ratio 2 : 3 : 5. If 20 students are increased in each batch, the ratio changes to 4 : 5 : 7. The total number of students in the three batches before the increases were
If three numbers are in the ratio of 1 : 2 : 3 and half the sum is 18, then the ratio of squares of the numbers is:/
If three numbers are in the ratio of 1 : 2 : 3 and half the sum is 18, then the ratio of squares of the numbers is:/
Divide t' 1870 into three parts in such a way that half of the first part, one-third of the second part and one-sixth of the third part are equal.
Divide t' 1870 into three parts in such a way that half of the first part, one-third of the second part and one-sixth of the third part are equal.
The speeds of three cars are in the ratio 2 : 3 : 4. The ratio between the times taken by these cars to travel the same distance is
The speeds of three cars are in the ratio 2 : 3 : 4. The ratio between the times taken by these cars to travel the same distance is
The incomes of A and B are in the ratio 3 : 2 and their expenditures are in the ratio 5 : 3. If each saves t' 1000, then, A's income can be:
The incomes of A and B are in the ratio 3 : 2 and their expenditures are in the ratio 5 : 3. If each saves t' 1000, then, A's income can be:
If 6x2 + 6y2 = 13xy, what is the ratio of x to y?
If 6x2 + 6y2 = 13xy, what is the ratio of x to y?
If \(\frac{a}{(a+b)}\) = \(\frac{b}{(c+a)}\) = \(\frac{c}{(a+b)}\), then each fraction is equal to ?
If \(\frac{a}{(a+b)}\) = \(\frac{b}{(c+a)}\) = \(\frac{c}{(a+b)}\), then each fraction is equal to ?