book Maths Puzzle Numerical Ability

sum of 3 consecutive no. is 18 whgat are the 3 no.(the sums are divisible by 3)

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book Other Question

Solve and show all work please.

Jane can mow the lawn in 3 hours, and Lester can mow it in 4 hours. If they work together, how long will it take them to mow the lawn? Solve and check the equation 3(4 + 4x) = 12x + 12