Question
PSLE
At first, Leah had a total of 62 white and blue balloons. 20 blue balloons burst. She then increased the number of white balloons by 75%. After that, Leah had a total of 51 balloons. How many blue balloons did she have at first?
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PSLE
At first, Leah had a total of 62 white and blue balloons. 20 blue balloons burst. She then increased the number of white balloons by 75%. After that, Leah had a total of 51 balloons. How many blue balloons did she have at first?