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October 21, 2014

October 21, 2014

Posted by **Caroline Sunshine** on Sunday, April 29, 2012 at 4:48pm.

1. When six is subtracted from five times a certain number, the result is sixty-nine. Find the number

6-5xy=69

2.Two number differ by seven. if their sum is sixty-five, what are the numbers?

3. the sum of three numbers is one hundred fifty-seven. the first is eight less than the second and the third is fifteen more than the second. Find the numbers.

4. there are four numbers. The first is twenty less than the second, the third is one more than twice the first and the fourth is four more than the third. We also know that the sum of the first and second equals the sum of the third anf fourth numbers. Fine the numbers

5. When a certain number is decreased be eighteen, the result is the same as if the number had been subtracted from thirty. Find the number.

6. the sum of five consecutive numbers is one hundred and thirty five. Find the numbers.

7. One quarter of a number, increased by one-half of the same number is twelve. What is this number?

8. The larger of two numbers is five times the smaller. If their difference is fifty-two, what are these numbers?

Thanks.

- Grade 8 Math -
**visoth**, Sunday, April 29, 2012 at 4:54pmfor number 1 its 5x-6=69 not 6-5xy=69 because 6 is being subtracted from the number not the number is being subtracted from 6 and its not xy cause its only 1 number

- Grade 8 Math -
**Ms. Sue**, Sunday, April 29, 2012 at 5:01pm2.

x + x + 7 = 65

3.

x - 8 + x + x + 15 = 157

- Grade 8 Math -
**niti**, Wednesday, July 30, 2014 at 7:03amLet the no. S be n, n+1, n+2, n+3, n+4

So n+n+1+n+2+n+3+n+4=135

5n+1+2+3+4=135

5n+10=135

5n=135-10

5n=125

n=125÷5

n=25

25 is the answer

- Grade 8 Math -
**niti**, Wednesday, July 30, 2014 at 7:08amThis is the ans of ques 6

- Grade 8 Math -
**niti**, Wednesday, July 30, 2014 at 7:13am5.

Let the no. be n

As given, n-18=30-n

n=30+18-n

n+n=30+18

2n=48

n=48÷2

n=24

Now you can check the answer

- Grade 8 Math -
**niti**, Wednesday, July 30, 2014 at 7:21am7.

Let the no. be n

1/4of n +1/2of n=12

By taking the LCM of 2and 4, we get 4

So, 1n+2n= 12×4

3n=48

N=48÷3

n=16

16 is the answer

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