HELP! Please answer this and please show me your solution too if possible.

1. One number is 5 less than 4 times another. If the sum of the two numbers is 11, find the numbers.

2. The sum of the ages of Cora and Rose is 40. Cora is 4 years older than Rose. How old is Cora?

3. Find three consecutive even integers such that their sum decreased by the third integer is 82.

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Answers

2015-02-17T19:37:31+08:00

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1.x=one number
y=2nd number

x=4y-5
x+y=11
Substitute
4y-5+y=11
5y=16
y=16/5

x=4(16/5)-5
x=64/5 - 25/5
x=39/5

2.C=R+4
C+R=40
R+4+R=40
2R=36
R=18

Cora is 22, Rose is 18.

3.x+x+2-x-4=82
x-2=82
x=84

The numbers are 84, 86, 88. Hope this helps =)
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