Answer:
$1500
* { 1267 t / lb * 2.2046 lb/ kg * 1 kg /$ .88) }
= ~~ 4761184 tabs
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To buy a wheelchair worth $1500, we will need 4751250 pop tabs at a unit rate of $0.88*(1/(1267*2.2)).
The unit rate of an article is the amount for a single unit of that article.
In the question, we are said that a student council collects aluminum pop tabs to raise money to purchase a wheelchair. A company buys the pop tabs for $0.88 per kilogram.
We have been asked if 1267 pop tabs have a mass of one pound, how many pop tabs are needed to purchase a wheelchair worth $1500.
We know 1 kilogram = 2.2 pounds,
or, 1 pound = 1/2.2 kilograms.
Mass of 1267 pop tabs = 1 pound = 1/2.2 kilograms
∴ Mass of 1 pop tab = 1/(1267*2.2) kilograms.
The rate at which the company buys pop tabs = $0.88 per kilogram.
∴ The unit rate of pop tab = $0.88*(1/(1267*2.2)).
The cost of a wheelchair = $1500.
∴ The number of pop tabs required to purchase a wheelchair of worth $1500 = Cost of wheelchair/Unit rate of pop tab
or, Number of pop tabs = 1500/(0.88*(1/(1267*2.2))) = 4751250
∴ To buy a wheelchair worth $1500, we will need 4751250 pop tabs at a unit rate of $0.88*(1/(1267*2.2)).
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