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3 years ago

How do you write 42% , 72% , 88% , and 35% as a fraction in simplest form.

2 answers:

8 0

All number in percentage form when converted into a fraction will serve as the numerator with 100 as the denominator. The percent sign will be removed and the fraction will be simplified.

42% = 42/100 = (42÷2) / (100÷2) = 21/50
72% = 72/100 = (72÷2) / (100÷2) = 36/50 = (36÷2) / (50÷2) = 18/25
88% = 88/100 = (88÷2) / (100÷2) = 44/50 = (44÷2) / (50÷2) = 22/25
35% = 35/100 = (35÷5) / (100÷5) = 7/20

Notice that both numerator and denominator must be factored by the same number to be simplified.

Fed [463]3 years ago

4 0

Put each one over 100. So 42/100, then reduce down by dividing by 2 both the top and bottom figures and you get 21/50 for your first answer. Do the same with each of the rest...72/100 and reduce down to 36/50, then reduce again 18/25 and that is the farthest you can reduce on that one. Do the same for the rest.

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Step-by-step explanation:

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Therefore;

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5 0

3 years ago

Jess has 60 ounces of an alloy that is 40% gold. How many ounces of pure gold must be added to this alloy to create a new alloy

tia_tia [17]

Answer:

84 ounces of pure gold

Step-by-step explanation:

Jess has 60 ounces of an alloy that is 40% gold. How many ounces of pure gold must be added to this alloy to create a new alloy that is 75% gold?

Pure gold = 100% gold

Let the number of ounces of pure gold = x

Hence, we have the equation

40% × 60 ounces + 100%× x ounces = 75%(60 + x)ounces

= 0.4 × 60 + 1x = 0.75(60 + x)

= 24 + x = 45 + 0.75x

Collect like terms

x - 0.75x = 45 - 24

0.25x = 21

x = 21/0.25

x = 84 ounces

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Answer:

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Step-by-step explanation:

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Anna007 [38]

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