Question
PSLE
At first, Leah had a total of 56 green and silver balloons. 15 silver balloons burst. She then increased the number of green balloons by 70%. After that, Leah had a total of 55 balloons. How many silver balloons did she have at first?
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PSLE
At first, Leah had a total of 56 green and silver balloons. 15 silver balloons burst. She then increased the number of green balloons by 70%. After that, Leah had a total of 55 balloons. How many silver balloons did she have at first?