Dr Pooranmal and Ashfaq A Khan Solutions for Chapter: Direct and Inverse Variations, Exercise 1: EXERCISE 8.1

The daily consumption of wheat in a hostel with $150$ students is $52.5\mathrm{kg}$.Find the consumption if the number of students becomes $110.$

If thickness of a pile of$14$ cardboard is $35\mathrm{mm}$, find the thickness of a pile $126$ cardboards.

A worker is paid $₹280$ for $7$ days.If his total income of month is $₹1040$, for how many days did he work.

The amount of extension in an elastic string varies directly as the weight hung on it.if a weight $180\mathrm{gm}$ produces an extension of $5.625\mathrm{cm}$, then what weight would produce an extension of $22.5cm$ ?

The length of the shadow of a pole $\text{8m}$ height at a certain time is $9.6 \mathrm{m}$, what is the height of another pole, the length of whose shadow at that time is $24\mathrm{m}$ ?

In $15$ days, the earth picks up $1.2\times {10}^8 \mathrm{kg}$ of dust from the atmosphere.In how many days will it pick up $4.8\times {10}^8\mathrm{kg}$ of dust.

$11$men can dig $6\frac{3}{4}$metres long trench in one day.How many men should be employed for digging $27$metres long trench of the same type in one day ?

A private taxi charges a fare of $₹260$ a journey of $200 \mathrm{km}$.How much would it travel for $₹279.50 ?$