dsmith538 dsmith538

01-04-2019
Mathematics

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the sum of three numbers is 125. the second number is 5 less than the first. the third number is 4 times the second. what are the numbers

Respuesta :

desperatesmile desperatesmile

01-04-2019

Answer:

The numbers are 25, 20 and 80

Step-by-step explanation:

125=a+b+c

b=a-5

c=4b

c=4(a-5)

c=4a-20

125=a+a-5+4a-20

125=6a-25

150=6a

25=a

b=a-5

b=25-5

b=20

c=4b

c=4(20)

c=80

✓:

80+20+25=125✓

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