Question

Laura is walking for a local charity She earns 75 cents for every lap she walks How much does she earn for walking 50 laps

Answer 1

She earns $ 37.5 by walking 50 laps

Explanation:

This method is called unitary method.

If we know the value of 1 unit of an item we can calculate any number of units of item.

For 1 lap she earns 75 cents.

She walks 50 laps.

She earns for 50 laps = 50*75= 3750 cents

Now we have to converts cents into Dollars for convenience.

1$ = 100 cents

3750 /100 = $ 37.5