One month, Ruby worked 8 hours more than Isaac, and Svetlana worked 4 times as many hours as Ruby. Together they worked 112 hour

Question

iVinArrow [24]

4 years ago

15

One month, Ruby worked 8 hours more than Isaac, and Svetlana worked 4 times as many hours as Ruby. Together they worked 112 hour

s. Find the number of hours each person worked.

Mathematics

1 answer:

melamori03 [73] · Answer 1 · 2022-01-09T15:13:00+03:00

melamori03 [73]4 years ago

3 0

R=8+I
S=4R

R+I+S=112
R+R-8+4R=112
6R=120
R=20

So therefore, Ruby worked 20 hours, Svetlana worked 80 hours, and Isaac worked 12 hours.

<span />