math

350 is 70% of what number?

A) 500
B) 420
C) 245
D) 280

What percent of 64 is 24?

A) 267%
B) 62.5%
C) 40%
D) 37.5%

What percent of $6.50 is $2.60?

A) 25%
B) 40%
C) 90%
D) 250%

20% of 140 is what number?

A) 280
B) 120
C) 28
D) 12

I am kind of confused on what to do so if one of you guys could help that would be good!!!!!!!!!!!! thanks

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  1. I wish authors would phrase those kind of questions in a more direct way.
    e.g.
    350 is 70% of what number?
    -----> 70% of what number is 350 ----> .7x = 350
    x = 350/.7 = 500

    check: .7(500) = 350

    What percent of 64 is 24? ----> (x/100)(64) = 24
    x = (24/64)(100)%

    The next one just like the above

    last one:
    20% of 140 is what number?
    ---> what is 20% of 140
    = .2(140) = ....

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  2. wait what????????????????

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