Answer:
If he can write 9 poems in 30 minutes then he can write 18 in 60 minutes and 27 poems in 90 minutes
9/30=18/60=27/90
27 poems in 90 minutes
Explanation:
he can write 27 poems in 90 minutes
it is 27 because 90/30 is so 9 poems per 30 minutes 3 times is 27
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