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2 years ago

Lisa earns $81 washing 9 windows. At this rate, how much does Lisa earn washing 5 windows?

2 answers:

7 0

So, this is simple, but needed to be one step at a time. We need to find out how much she earns by washing one window, and to do that we need to divide $81 by 9, and after that division she earns $9 per window. If she washes 5 windows, multiply $9 by 5 as that's how much she's going to earn. So, when she washes 5 windows, she earns $45.

tester [92]2 years ago

6 0

Answer:

Step-by-step explanation:

81÷9=9

9×5=45

..............

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Answer:

General equation of line : $y = mx+c$ --1

Where m is the slope or unit rate

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Equation 2 : $\frac{1}{3}d=3p$

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$m =9$

Thus the unit rate is 9 dollars per pound

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$(x_1,y_1)=(\frac{1}{9},1)$

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$m = \frac{9-1}{1-\frac{1}{9}}$

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3 years ago

A shop is having a sale all items are reduced work out the sale price of an item normally priced at £60

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Question:

A shop is having a sales all items are reduced by 25%. Work out the sale price of an item normally priced at £60?

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Step-by-step explanation:

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3 years ago

Lisa earns $81 washing 9 windows. At this rate, how much does Lisa earn washing 5 windows?​

Lisa earns $81 washing 9 windows. At this rate, how much does Lisa earn washing 5 windows?