Samanya Gyaan Darpan Solutions for Chapter: Practice Set, Exercise 47: Numerical Ability

The total number of students in a school is $31700$. If the ratio of boys to the girls in the school is $743 : 842$ respectively, what is the total number of girls in the school?

The sum of five consecutive even numbers A, B, C, D and E is $130$. What is the product of A and E?

If the square of a number is subtracted from $4052$ and the difference is multiplied by $15$, the answer so obtained is $41340$. What is the number?

The population of a town $2$ years ago was $2,45,000$. It increased by $12\%$ in the first year and then increased by $15\%$ in the second year. What is the current popu­lation of the town ?

The perimeter of a square is $504 cms$. What is the area of the square?

Mrs. Sheela spends $18\%$ of her monthly income for her children's education. She spends $32\%$ of her monthly income on household expenses and $12\%$ on travelling. She spends $45\%$ of the remain­ing amount on gambling and manages to save only $₹9,405$ at the end of the month. What is Mrs. Sheela's monthly income? 

Find the average of the following set of scores:

Tanya obtained $95\%$ marks in Physics, Chemistry and Maths together, and she obtained $225$ marks in Social Science, English and Hindi together. If the maxi­mum marks one can obtain in each of the subjects is $100$, what is Tanya's overall percentage in all the six subjects together?