An alloy contains copper and tin in the ratio 3: 2. If 250 gm of copper is added to this alloy then copper in it becomes double the quantity of tin in it. What is the amount (in gm) of tin in the alloy? 

The side of a square is 8 cm. If a square is made by joining the mid points of each sides of this square and this process goes up to infinity. Calculate the sum of areas of all the squares made.

When a number is increased by 24, it becomes 115% of itself. What is the number?

Direction : What should come in place of the question (?) in the following question.

140% of 450 + 24% of 650 =?

There are 45 trees in a row. The lemon tree is 20^th from right end. What is the rank of lemon tree from left end?

The simple interest on an amount of 2,800 at the end of 3 years is Rs 420. What will be the simple interest at Rs 3200 for the same rate and for the same period?

Direction (94-98): Study the following table to answer the given questions.
         Centre and Post-wise Numbered of candidate

Which centre has the highest number of candidates?