exam Maths Puzzle Numerical Ability

log3(x-1)-log3(x+2)=2

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exam Other Question

A room is 1.5 times long as it is wide and its perimeter is 25 meters. find the dimension of the room? If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together to mix the 20 drinks?