Kusum always forgets how to convert miles to kilometres and back again. However, she remembers that her car’s speedometer shows both miles and kilometres. She knows that travelling 50 miles per hour is same as travelling 80 kilometres per hour. To cover a distance of 200 km, how many miles Kusum would have to go?

The following table shows the distance travelled by one of the new eco-friendly energy-efficient cars travelled on gas.

Which type of properties are indicated by the table? How much distance will be covered by the car in 8 litres of gas?

Kritika is following this recipe for bread. She realises her sister used most of sugar syrup for her breakfast. Kritika has only cup of syrup, so she decides to make a small size bread. How much of each ingredient shall she use?

Bread recipe

1 cup quick cooking oats

2 cups bread flour

cup sugar syrup

1 tablespoon cooking oil

cups water

3 tablespoon yeasts

1 teaspoon salt.

Many schools have a recommended students-teacher ratio as 35:1. Next year, school expects an increase in enrolment by 280 students. How many new teachers will they have to appoint to maintain the students-teacher ratio?

The students of Anju’s class sold posters to raise money. Anju wanted to create a ratio for finding the amount of money her class would make for different numbers of posters sold. She knew they could raise Rs. 250 for every 60 posters sold.

(a) How much money would Anju’s class make for selling 102 posters?

(b) Could Anju’s class raise exactly Rs. 2,000? If so, how many posters would they need to sell? If not. Why?