SOLUTION: Juan,Steve & Gabriella bought a total of 30 markers at an art store.Juan bought 3 more markers than Steve.Gabriella bought 7 times as many markers as Steve.How many did each buy?

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Question 508776: Juan,Steve & Gabriella bought a total of 30 markers at an art store.Juan bought 3 more markers than Steve.Gabriella bought 7 times as many markers as Steve.How many did each buy?
Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
j +s +g = 30
.
j = s+3
.
g = 7*s
.
substitute
.
s+3 +s + 7s = 30
.
9s = 27
.
s = 3
.
j = s+3= 6
.
g = 7*3 = 21
.
3+6+71 = 30
correct.
.
Answer: Juan bought 6. Steve bought 3. Gabriella bought 21.
.
Done.