Question

Fred worked these hours during the week: 8, 4 1/2, 3 3/4, 7 1/2, 4 3/4. If he is paid $5.15 per h, how much did he earn?

$133.90

$146.78

$144.20

$139.05

Answer 1

Total hours earned = 8 + 4 1/2 + 3 3/4 + 7 1/2 + 4 3/4 = 28 1/2 = 28.5

Amount earned = 28.5 x 5.15 = $146.78

Answer 2

Answer:

He earns $146.78

B is correct.

Step-by-step explanation:

Fred worked these hours:

$8, 4\dfrac{1}{2}, 3\dfrac{3}{4}, 7\dfrac{1}{2}, 4\dfrac{3}{4}$

He is paid $5.15 per hour.

First we find total number of hours he worked.

So, we will add all the value

$\text{Total hours}=8+4\dfrac{1}{2}+3\dfrac{3}{4}+7\dfrac{1}{2}+4\dfrac{3}{4}$

First we change mixed fraction to fraction

$\text{Total hours}=8+\dfrac{9}{2}+\dfrac{15}{4}+\dfrac{15}{2}+\dfrac{19}{4}$

$\text{Total hours}=28.5\text{ hours}$

Fred worked total 28.5 hours. He is paid $5.15 per hour.

Total earn = Total number of hours x Rate per hour

$\text{Total earn}=28.5\times 5.15\approx 146.78$

Hence, He earns $146.78