Question 1187205: When 8 is added to a certain number and the sum is multipy by 3,the result is 57.find the number Found 2 solutions by ikleyn, josgarithmetic:Answer by ikleyn(52842) (Show Source):
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When 8 is added to a certain number and the sum is multiplied by 3, the result is 57. find the number.
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Solve the problem in backward manner.
First divide 57 by 3. The quotient is 19.
Next subtract 8 from 19 and get the ANSWER mentally, without solving any equations : the number is 11.
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