It the fourt day the total is 0.70 because
Day one: .10
Day two: you double it so .20
Day three: you double it again so .40
Day four: you add .30 so .70 is the total
Are you given an equation?
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Hello!
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❖ 20% as as a fraction in lowest terms is 
Percents are out of 100% so write 20% out of 100% as a fraction:

Both the numerator and denominator can be divided by 20 so once divided, you get 
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