math

Please help
Mr. Chavez owned 3/4 of a family business. He sold 1/2 of the business to his sister. what portion of the business does he still own?
a. 5/4
b. 1/4
c. 1/5
d. 4/5
Answer: b

Gasoline is about $2 per gallon. You use about 1 1/2 each day driving to and from work. how much budget for gasoline over the next month (about 20 workdays).
a. $40
b. $50
c. $60
d. $70
Answer: c

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asked by Kim
  1. 1. its a basic subtraction question.
    (3/4)-(1/2)=1/4 you subtract because he sold it.

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    posted by Joshua
  2. 2. since you want to know for 20 days, how much gas you waste,
    20*( 1 1/2) = 30
    So , you waste 30 gallons of gas in 20 days, How much money do you spend on 30 gallons of gas.

    30*($2)= $60 for 30 gallons of gas which covers 20 workdays)

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    posted by Joshua

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