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3 years ago

5

In a class of 60 students 8 will be left handed. If a class includes 20 lefties, estimate how many students are in the class.

1 answer:

svlad2 [7]3 years ago

8 0

Answer:

150

Step-by-step explanation:

60/8=x/20. Solve for x. So cross multiply 20•60=1200 divided by 8=150

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Jayson’s car can go 300 miles on 12.5 gallons of gasoline. How far can he drive on 42 gallons of gas?

fomenos

$300\ miles\ on\ 12,5\ gallons\\
x\ miles\ \ on\ \ \ 42\ gallons\\\\
Making\ proportion:\\
300-12,5\\
x-42\\\\
Cross\ multiplication\\
300*42=12,5x\\\\12600=12,5x\ \ \ | divide\ by\ 12,5\\\\
x=1008\\\\
He\ can\ drive\ 1008\ miles\ on\ 42 \ gallons\ of\ gas.$

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