Asked by Anonymous

Nina had 1/7 as many cakes to sell as Belle. The two friends decided to share the work evenly. To do that, Belle had to give 15 cakes to Nina. What was the total number of cakes the two friends had to sell?
Answered by oobleck
b-15 = b/7 + 15
b = 35
so nina had 5, and together they had 40

check:
35-15 = 5+15
Answered by PsyDAG
x = number of cakes Nina would have after getting the 15. Multiply that by 2 for both of them.

6/7x = 15
Answered by Anonymous
n = b/7
n + 15 = b - 15 or n = b - 30
so
b -30 =b/7
7 b - 210 = b
6 b = 210
b = 35
n = b - 30 = 5
35 + 5 = ?
Answered by mathhelper
number of cakes that Nina has = x
number of cakes that Belle has = 7x

Belle gives 15 to Nina, Belle now has 7x - 15
Nina has x + 15

we are told that 7x - 15 = x + 15
6x =30
x = 5

total cakes = x + 7x = 8x = 40
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