Question
PSLE
At first, Leah had a total of 57 grey and blue balloons. 17 blue balloons burst. She then increased the number of grey balloons by 80%. After that, Leah had a total of 52 balloons. How many blue balloons did she have at first?
3 m

Click button first when a symbol is required. X

PSLE
At first, Leah had a total of 57 grey and blue balloons. 17 blue balloons burst. She then increased the number of grey balloons by 80%. After that, Leah had a total of 52 balloons. How many blue balloons did she have at first?