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Lostsunrise [7]
3 years ago
7

duane and mick are saving their money to build a treehouse. duane adds $5 to their piggy bank every other week. mick adds $2 eve

ry week. so far they have saved $45. how many weeks have they been saving their money?
Mathematics
2 answers:
prisoha [69]3 years ago
8 0

<em><u>Answer:</u></em>

10 weeks

<em><u>Explanation:</u></em>

<u>We are given that:</u>

Duane adds $5 every other week.

<u>This means that:</u>

Duane adds \frac{5}{2} = $2.5 per week

<u>We are also given that:</u>

Mick adds $2 every week

<u>Therefore:</u>

amount added each week = 2.5 + 2 = $4.5

Now, we know that the total amount they saved is $45 and we want to find the number of weeks, <u>therefore</u>:

Total amount saved = amount saved per week * number of weeks

45 = 4.5 * number of weeks

number of weeks = \frac{45}{4.5} = 10 weeks

Hope this helps :)

levacccp [35]3 years ago
5 0
10 weeks is the number of weeks they have been saving their money.

Duane = $5 every two weeks
Mick = $2 every week.

Get the value of Duane's weekly contribution = $5 / 2 = $2.5

Duane's share + Mick's share = $45
$2.5x  + $2.0x = $45   ===>> equation can also be x(2.5 + 2) = 45
$4.5x = $45
$4.5x / $4.5 = $45 / $4.5
x = 10 weeks.

To check:

$2.5(10) + $2(10) = $45
$25 + $20 = $45
<span>$45 = $45</span>
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