Subject Experts Solutions for Chapter: Direct and Inverse Proportions, Exercise 1: Worksheet 1

When two quantities are related in such a manner that if one increases and the other also decreases, then they always vary directly.
 

The area of a field and the crop harvested are in direct proportion.

Devangi travels $50 \mathrm{m}$ distance in $75$ steps. The distance travelled in $375$ steps is $0.350 \mathrm{km}$.

A machine takes $6 \mathrm{h}$ in filling $48$ containers. If the $k$ number of containers filled by it in $48 \mathrm{h}$, then find the value $k$.

The cost of $8 \mathrm{m}$ cloth is $₹250$. If the cost of $5.8 \mathrm{m}$ of the same cloth is $₹k$, then find the value of $k.$

A person can type $1920$ words in $60 \min$. If he is taking $k \min$ to type $3008$ words, then find the value of $k.$

In a city map a scale of $1 \mathrm{cm}$ represents $6 \mathrm{km}$. If the distance of a zoo from a metro station is $4.5 \mathrm{cm}$ and the actual distance is $k \mathrm{km}$ then find the value of $k.$

There is $20 \mathrm{gm}$ of protein in $75 \mathrm{gm}$ of salted fish. If $k \mathrm{gm}$ of protein is present in $225 \mathrm{gm}$ of that fish, then find the value of $k$.