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konstantin123 [22]
3 years ago
6

The second of three numbers is 11

Mathematics
1 answer:
artcher [175]3 years ago
6 0

Answer:The sum of three numbers is 112.

a+b+c=112

The second number is 5 times the first.

b=5a

so a+5a+c=112

6a+c=112

The third number is 20 less than the second. What is the second number?

c=5a-20

6a+5a-20=112

11a-20+20=112+20

11a/11=132/11

a=12

Step-by-step explanation:

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