Question

Which is a reasonable estimate of hourly pay for Joanna and Richard?

A. Joanna earns $9.50 an hour; Richard earns $7.50 an hour
B. Joanna earns $11.00 an hour; Richard earns $8.50 an hour
C. Joanna earns $9.00 an hour; Richard earns $11.25 an hour
D. Joanna earns $10.00 an hour; Richard earns $8.50 an hour

Answer 1

The answer is B, Joanna earns $11 and Richard earns $8.50

Answer 2

Option B is correct.

Explanation:

If we take the day 4 earnings, the graph shows their 32 hours earnings.
`4*8=32`

We can see that Joanna earns $350 at day 4. So, her hourly wage is :

`(350)/(32)= 10.93` ≈ $11.00 (approx)

And Richard earns approximately $270 for 32 hours. So, his hourly wage is:

`(270)/(32)=8.43` ≈ $8.50 (approx)

We can also check the average by taking day 3 wages.

Joanna earns approximately $260 in 24 hours. So, her hourly wage is :

`(260)/(24)= 10.83` ≈ $11.00

Richard earns $200 approx in 24 hours. So, his hourly wage is :

`(200)/(24)= 8.33` ≈ $8.50 or 8.00 (this is not option)

Hence, after calculating the approximate wages, we can see that Joanna earns approx $11.00 per hour and Richard earns approx $8.50

Therefore, option B. Joanna earns $11.00 an hour; Richard earns $8.50 an hour - is true.