If a clock takes seven seconds to strike seven, How long will it takes to strike ten?

On children's day, sweets were to be equally distributed among $175$ children in a school. Actually on the children's day, $35$ children were absent and therefore each child got $4$ sweet extra. Total how many sweets were available for distribution? 

Between two books ends in your study are distributed your five favourite puzzle books. If you decide to arrange the five books in every possible combination and move just one book every minute, how long would it take you?

If $100$ cats kill $100$ mice in $100$ days, then $4$ cats would kill $4$ mice in how many days?

Mr. Johnson was to earn $₹300$ and a free holiday for seven weeks of work. He worked for only $4$ weeks and earned $₹30$ and a free holiday. What was the value of the holiday?

A father is now three times as old as his son. Five years back, he was four times as old as his son. The present age of the son in years is

In a group of $15$ people, $7$ read French, $8$ read English while $3$ of them read none of these two. How many of them read French and English Both?

The father's age is $6 year$ more than three times his son's age. If after $4 years$, the father's age would be $12 years$ more than two times the son's age, find the present age of the father.

Divide $₹320$ among $A, B \& C$ so that $A$ may have $₹30$ more than $B \& C$ may have $₹20$ more than $A.$