exam Maths Puzzle Numerical Ability

Tom walked to the meeting at 2 miles per hour and caught a ride home in an old truck at 10 miles per hour. How far was it to the meeting place if his total travel time was 18 hours?

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exam Other Question

Classify each triangle by its angles.

1. 20,70,90 =

2. 13,27,140 =

3. 46,4,86 =

Thank you very much for helping me.
Find the volume of a solid uniform crosssection with an area of 6.5 cm^2 and height, 24 cm. (take pi as 3.142)

I dont understand what the problem is asking for. Even if i did, I would not be able to solve it probably. Please help.