SOLUTION: A large container of water is 7/8 full. After 15 l has been taken out the container is 2/3 full. When full, how many litres does the container hold

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Question 643959: A large container of water is 7/8 full. After 15 l has been taken out the container is 2/3 full. When full, how many litres does the container hold
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = liters when full
given:
+%287%2F8%29%2Ax+-+15+=+%282%2F3%29%2Ax+
Multiply both sides by +24+
+21x+-+15%2A24+=+16x+
+5x+=+15%2A24+
+x+=+3%2A24+
+x+=+72+
It holds 72 liters when full