exam Maths Puzzle Numerical Ability

.6m+a=b solve for m

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exam Other Question

Solve: (logbase16 x)(logbase16 x)=1/4 a boat goes upstream 30 miles and downstream 44 miles in 10 hours.the next day it goes upstream 40 miles and downstream 55 miles in 13 hours.what is the average speed of the boat and the stream?