A shopkeeper gains 20 percent by giving a discount of 10 percent of the marked price of a toy. If he had given a discount of 20 percent, then what would be his profit percentage?

‘A’ alone can complete a work in 6 days and “B” can complete this work alone in 8 days. They can complete this work in 3 days with the help of C. If they are paid Rs. 6400 for this work, then find the share of C.

A and B can do a work together in 18 days. A is three times as efficient as B. In how many days can B alone complete the work?

At each corner of a triangular field of sides 26m, 28m, and 30m, a cow is tethered by a rope of length 7m. the area unglazed by the cow? 

If the cost of 10 books is ₹250, then find the cost of 15 books.

In bag there are coins of 25 paisa, 50 paisa and 1 rupee in the ratio of 3 : 4 : 5. If there are in all Rs.31, then how many 1 rupee coins are there in the bag?

The difference between simple interest and compound interest on a certain sum at $$ 12{1\over2}$$ % for 3 years is Rs 125. Find the sum.

In the following questions two equations numbered I and II are given. You have to solve both the equations and ____
I.$$ {7\over \sqrt {x}}+{5\over \sqrt {x}}=\sqrt {x}$$
II.$${y^2 - {12^{5/2}\over \sqrt {y}}}= 0$$
Give answer
(A) x > y
(B) x ≥ y
(C) x < y
(D) x ≤ y
(E) x=y or the relationship cannot be established