Question
PSLE
At first, Leah had a total of 63 red and blue balloons. 11 blue balloons burst. She then increased the number of red balloons by 80%. After that, Leah had a total of 76 balloons. How many blue balloons did she have at first?
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PSLE
At first, Leah had a total of 63 red and blue balloons. 11 blue balloons burst. She then increased the number of red balloons by 80%. After that, Leah had a total of 76 balloons. How many blue balloons did she have at first?