26-09-2017
Mathematics

contestada

tom is 4 more than twice andrews age. sara is 8 less than 5 times andrews age. if tom and sara are twins, how old is andrew?

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Kalahira Kalahira

09-10-2017

Tom = t Andrew = a Sara = s t = 2a+4 s = 5a-8 s= t 2a+4 = 5a-8 -3a = -8-4 -3a = -12 a = 4 Andrew is 4 s = 5(4)-8 = 12 So Tom and Sara are 12

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