This year, Benny is 12 years old. his brother is 175% of Benny's age. how old is Lenny?

1 answer:

5 0

12 * 1.75 = 21.
easy as pie.

Something to help
123% ⇒ multiply by 1.23
75% ⇒ multiply by .75
5% ⇒ multiply by .05

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