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kakasveta [241]
3 years ago
6

One month ruby worked six hours more than Isaac and svetlana worked four times as much hours as ruby together they worked 126 ho

urs find the number of hours each person work
Mathematics
1 answer:
natulia [17]3 years ago
4 0
R=I+6   S=4R   I    

I+(I+6)+4(I+6)=126

Basic algebra (I dont know how to show it) leaves you with: 6I = 90, divide both sides by 6 and I=15
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