Question
PSLE
At first, Leah had a total of 57 yellow and grey balloons. 18 grey balloons burst. She then increased the number of yellow balloons by 75%. After that, Leah had a total of 48 balloons. How many grey balloons did she have at first?
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PSLE
At first, Leah had a total of 57 yellow and grey balloons. 18 grey balloons burst. She then increased the number of yellow balloons by 75%. After that, Leah had a total of 48 balloons. How many grey balloons did she have at first?