Farah Sultan, Mridula Sharma, Varun Bali, Neetu Gaikwad and, Rashmi Jain Solutions for Chapter: Mathematical Reasoning and Aptitude, Exercise 7: Chapter Practice

If a number is multiplied by three-fourth of itself, then the value thus obtained is $10800$. What is that number?

If cost of $15$eggs is$₹ 75$, then find out the cost of $4$ dozens eggs.

If the cost price of$50$ oranges is equal to the selling price of $40$oranges,then the profit percentage?

At what rate of interest per annum on a certain sum invested for $5$ yr. The simple interest will be half of the principal?

Find the compound interest on $₹ 31250$ at $16\%$ per annum compounded quarterly for $9$ months.

The ratio of the ages of A and B at present is $3:1$. Four years earlier the ratio was $4:1$. The present age of A is

$12$ monkeys can eat $12$ bananas in $12$ min. In how many minutes can $4$ monkeys eat $4$ bananas?

Two athletes start from the same point and move on a closed track of $600$ m. If they run in same direction at speeds of $1.5$ m/s and $3.5$ m/s, when will they cross each other the second time?