Question
PSLE
At first, Leah had a total of 108 red and purple balloons. 18 purple balloons burst. She then increased the number of red balloons by 70%. After that, Leah had a total of 139 balloons. How many purple balloons did she have at first?
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PSLE
At first, Leah had a total of 108 red and purple balloons. 18 purple balloons burst. She then increased the number of red balloons by 70%. After that, Leah had a total of 139 balloons. How many purple balloons did she have at first?