exam Maths Puzzle Numerical Ability

It took 6 hours to travel to town, and it took up to 8 hours to travel back, becasue your return trip speed was 10mph less than the outgoing speed. What was your return trip speed?

Please assist,I have difficulty with word problems.....
Thanks!

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exam Other Question

How do I solve the following equation for P?

-3 = (4000/(130-P))* ((130+P)/(6000+10000)) The 6th graders from an elementary school are going to celebrate the end of the year by going to the local pizza parlor. There are 120 in the whole group and there are 2 times as many children as adults in the group. How many children are there?