Arihant Expert Team Solutions for Exercise 1: Most Important Questions

Which one of the given interchanges in signs would make the given expression correct?

$30-6÷4+2\times 3=7$

Sum of three numbers is $98$. If the ratio of the first and second number is $2 : 3$ and the ratio of second and third number is $5 : 8$, then what is the second number.

The age of the father is twice that of his son’s present age. After $5$ yr the sum of their ages will be $85$. How old are they now (in yr)?

A bus leaves Delhi with half the number of women as men. At Meerut, ten men get down and five women get in. Now, there are equal number of men and women. How many passengers boarded the bus initially at Delhi?

A man had $19$ cows. All but $7$ died. How many live cows does he have?

A monkey climbs $12 m$ high smooth pole. It climbs $2 m$ in the first minute and slides down $1 m$ in the next minute and trend continues, then in how many minutes will it reach the top of the pole?

$15$ men can do a piece of work in $40$ days. In how many days $20$ men will do the same piece of work?

If the price of $2 kg$ almonds is equal to the price of $8 kg$ walnut and the price of $5 kg$ almonds and $16 kg$ walnut is $Rs. 1080$, then what is the price per $kg$ of almonds?