Question

An empty swimming pool is to be filled up to 9/10 of its capacity.A pump takes half an hour to fill 3/10 of the pool, how long will it take to fill 9/10 of the pool?​

Answer 1

Answer:

9/4 +3/10=12/14

12/14+9/10=21/41

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Answer 2

Answer:

Hope it's correct thank you ~♥~