What is the answer for 65=2(d+1)+5d?

1 answer:

vladimir1956 [14]3 years ago

5 0

$65 = 2(d + 1) + 5d$
$65 = 2d + 2 + 5d$
$65 = 7d + 2$
$63 = 7d$
Finally divide by 7.
$d = 63 \div 7 = 9$
Hence, the answer is d = 9

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_____

<em>Comment on the problem</em>

You're being asked to compare two different rates that are associated with two different people. First the comparison is one way, then it is the other way. This can be confusing. It might be helpful to draw and label a simple chart to help you keep it straight. (The attachment is such a chart scribbled on a bit of scratch paper. It is sufficient for the purpose.)