Monicaa Abhijit Solutions for Chapter: Direct and Inverse Variation, Exercise 3: REVIEW EXERCISES

Does weight of rice $\left(x\right)$ and its cost $\left(y\right)$ show direct variation?

If $10$ men can dig a pit in $14$ days, in how many days can $20$ men dig the pit?

What is the condition for two quantities to be in inverse variation?

A hotel paid a total of $₹ 5,81,760$ as salaries to $24$ workers in the month of march. $9$ new workers joined the hotel in April, What will be the salary bill of the hotel for April?

Telephone poles are fixed at an equal distance from each other. If $12$ such poles are fixed over a distance of $75 \mathrm{km}$, how many poles are required for a distance of $25 \mathrm{km}$?

Ramita cycles to her college at an average speed of $15 \mathrm{km}/\mathrm{h}$. She takes $30$ minutes to reach her college. If she wants to reach her college in $25$ minutes, what should be her average speed?

In an army camp there is suffieient food for $120$cadets for $24$ days. If $48$ cadets leave the camp, how long would the food last?

If $x$ and $y$ are in direct variation with each other , fill in the missing entries.