laahmiisy
19.09.2021 •
Mathematics
Maggie's brother is 3 years younger than three times her age. The sum of their ages is
21.
How old is Maggie?
Maggie is
years old
Solved
Show answers
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Ответ:
Maggie is 6 years old.
Maggie's brother is 15 years old
Step-by-step explanation:
Take Maggie's age as 'x'
Her brother's age = 3x - 3
Sum of their ages = 21
Hence,
Maggie's age + brother's age = 21
(x) + ( 3x-3 ) = 21
x + 3x - 3 = 21
4x = 21 + 3
4x = 24
x =
x= 6
Maggie's age = x = 6
Her brother's age = 3x - 3
= 3(6) -3
= 18 - 3
= 15 years
Hope this helps.
Ответ:
This is your answer == 4.66666666667