exam Maths Puzzle Numerical Ability

The average speed for the first 36 miles was 12mph. The average speed for the next 45 miles was 15mph. What should be the average speed for the next 54 miles so that the overall average speed would be 15mph?

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exam Other Question

i have to show whether the following numbers are divisible by 2,3,or 5...The work needs to be shown. the numbers are 925, 165,351, and 1,495 The present ages of a husband and wife are in the ratio of seven to six, and five years ago the ratio was six to five. Find their ages now.