Ratios, rates and proportions

Question 1 of 10

A car travels at 72 km/h. Its speed in m/s is

Question 2 of 10

The exchange rate is GH¢15 to US$1. How many dollars is GH¢600?

Question 3 of 10

A map has a scale of 1 : 50,000. What real distance does 4 cm on the map represent?

Question 4 of 10

Convert 72 km/h to metres per second.

Question 5 of 10

A car travels 150 km in 2½ hours. What is its average speed?

Question 6 of 10

A car uses 8 litres of fuel for every 100 km. How much fuel does it need for 350 km?

Question 7 of 10

GH¢600 is shared in the ratio 2 : 3 : 5. The largest share is

Question 8 of 10

A 20% solution of salt is mixed with a 50% solution to make 60 litres of 30% solution. How many litres of the 20% solution are used?

Question 9 of 10

A car uses 8 litres per 100 km. How many litres for 350 km?

Question 10 of 10

A trader bought an item for GH¢250 and sold it for GH¢300. The percentage profit is