Calculate $12\%$ of $7000$ oranges.

Calculate $3.5\%$ of $5000$ people.

Check whether the numbers $6,10,20,18$ are in proportion or not.

In a class of $40$ students, $22$ students are boys. What is the ratio of the number of boys to the number of girls in the class?

If a car covers $300 \mathrm{km}$ in $8 \mathrm{hours}$ and a cycle covers $400 \mathrm{km}$ in $16 \mathrm{hours}$, determine the ratio of their speeds.

Archita studies $4$ hours a day. The ratio of study hours of Archita and Banish is $2:5$. Find the number of hours for which Banish does the study.

In an examination, $1360$ students appeared. If out of them $85\%$ passed, how many students failed?

Abhay eats $4$ packets of chips per week. The ratio of the packets of chips eaten by Abhay and Somesh per week is $2:8$. Find out how many packets of chips does Somesh eat per week.

In a factory, a labourer earns $₹1200$ in $6$ days. How much money will he earn in $24$ days?