RPH Editorial Team Solutions for Exercise 2: NUMERICAL ABILITY

The average age of a man and his son is $30$ years. The ratio of their ages is $4 : 1$ respectively. What is the son's age?

What is the least number to be added to $2400$ to make it a perfect square?

What would be the compound interest obtained on an amount of $\mathrm{Rs}. 2,840$ at the rate of $15$ per annum after $2$ years ?

The product of two consecutive odd numbers is $2303$. What is the greater number?

The difference between $31\%$ of a number and $11\%$of the same number is $360$. What is $23\%$ of that number?

A canteen required $22$ dozen apples for seven days. How many dozen apples will it require for $336$ days?

In an examination it is required to get $750$ of the aggregate marks to pass. A student gets $700$ marks and is declared failed by $4\%$ marks. What are the maximum aggregate marks a student can get?

The cost of $4$ Watches and $2$ Lockets is.$\mathrm{Rs}.10,800$.  What is the cost of $6$ Watches and $3$ Lockets?