One month, ruby worked 6 hours more than isaac, and svetlana worked 4 times as many hours as ruby. Together they worked 126 hours. Find the number of hours each person worked.

Answer 1

R=6+I S=4R R+I+S=126

I=R-6

Substitute to get R+R-6+4R=126

6R=132

R=22 hours Ruby worked 22 hours

S=4R = 4x22 = 88 hours Svetlana worked 88 hours

I=R-6=22-6=16 hours Isaac worked 16 hours

22+88+16=126