I have encountered a math's problem for primary 6, could you please advise me how to solve it?
There were a total of 820 boys and girls at a funfair. After 3/4 of the boys and 3/5 of the girls left the funfair, there were 120 more girls than boys remaining behind. How many boys were there at the funfair at first?
Thanks for your help
Yani
From the Desk of Sunny Tan........
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