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- anonymous

The has tank in hana's car holds 15 1/2 gallons. if hana used 3/4 of a tank of gas when she drove across Arizona , how many gallons of gas did she use on that trip

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- anonymous

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- anonymous

The gas

- anonymous

Convert to decimal, multiply, covert back to fraction.

- anonymous

Is it subtraction the problem

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- anonymous

Leonhart

- anonymous

No. Your simply trying to figure out what 3/4 is of 15 1/2.
Convert to decimal. 15.50 0.75
Multiply. 15.5 * .75
Convert to fraction.

- anonymous

You would subtract if it asked how much she had left

- anonymous

So 11 1/4

- anonymous

15.5 * .75 = 11.625
11 1/4 would = 11.25

- anonymous

Can u do that in fractions not decmials

- anonymous

0.625 = 5/8. Your answer is 11 5/8 :)

- anonymous

So u would do 15 1/2 equals 31/2 then muiltply that to 3/4 and then get 93/8 then get 11 4/8 simplfy equals 11 1/4 tell me what i did wrong

- anonymous

First, convert the fractions (15 1/2 & 3/4) to decimals.
Then multiply the two together. (15.5 * .75)
Then convert the decimal to a fraction. (11.625 = 11 5/8)

- anonymous

If you don't want to convert to decimals and back into a fraction you can simply multiply the fractions. Whatever works best for you.
Multiplying the fractions:
Convert 15 1/2 to a improper fraction. = 31/2
Multiply 31/2 by 3/4. = 93/8
Covert/simplify that into a mixed number. = 11 5/8

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