Mariko has a job mowing lawns that pays $7 per hour. Who would make more money for working 10 hours? Explain or show work.

Step-by-step explanation:

Mariko would make 7×10=70 dollars for working 10 hours. Kell's hourly rate can be found by dividing the money earned by the hours worked each day.

 MondayWednesdayFriday

Time worked1.5 hours2.5 hours4 hours

Money earned$12.60$21.00$33.60

Pay rate$8.40 per hour$8.40 per hour$8.40 per hour

If Kell works for 10 hours at this same rate, he will earn 8.4×10=84 dollars. So Kell will earn more money for working 10 hours.

Alternatively, we could reason proportionally without computing the unit rate.  Since Mariko earned $21.00 for 2.5 hours, she will earn four times as much for working four times as long (10=4×2.5), for a total of 4×$21=$84.

i would say c is the best answer, hope it's right!

good luck! =)

cutie~