If cost price = Rs.10, selling price = Rs.12  ,then gain or loss =

A can do a piece of work in 30 days while  B can do it in 40 days.  A and B  working together can do it in

A sum amounts to Rs. 1352 in 2 years at 4%  compound interest.  The sum is

A speed of 6 m/sec  is the same as :

A man crosses a street 600 m. long in 5 minutes.  His speed in kilometers per hour is :

A and B  can together do a piece of work  in 15 days.  B alone can do it in 20 days.  A  alone can do it in

Marked price - sale price =

If 15 : 22 ¹/₂ = x : 9 ,then x =

If  a : b = 4 : 5  and b : c = 6 : 7, then a : c = _____.

In a ratio which is equal to 7 : 8, if the antecedent is 35. What is the consequent ?