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The sum of three numbers is 20. The second number is 4
times the first number , and the sum of the first and third
is8. Find the numbers.
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Answer / neeraj venu
Three numbers are x , y , z ;
So ,
x + y + z = 20;
4x = y;
x+ z= 8;
therefore ,
8+y=20;
y = 12, x= 3 ,z= 5;
| Is This Answer Correct ? | 17 Yes | 3 No |
Answer / vinod
x,y,z
1: x+y+z=20
2: y=4x
3: x+z=8
so:
x+4x+8-x=20
4x=12 so x=3
y=4*3 so y=12
z=8-x so z=5
| Is This Answer Correct ? | 8 Yes | 3 No |
Answer / dheeraj shandilya
Let the three numbers be x, y, z.
Then A/Q second number is four times the first number .
It means y= 4x
so
x+4x+z =20-------(1)
also x+y =8----------(2)
solving these two equation we will get x=3, y= 4x= 12 and
z= 5.
So the three number will be 3, 12, 5
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / dheeraj shandilya
In Answer posted above there is a typing mistake. In
equation (2) y should be replaced with z so the equation
(2) became
x+z = 8
Thanks
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / j
Five more than the number is less than or equal to twice the number5x+less2
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / j
The sum of the number and 50 is less thanthree times the number
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / mariaalex007
The nos are 2,8,5......
solution...
x+4y+z=20;
but.. x+z=8;
so..4y+8=20;
so..y+2=10;
so..
y=8;
| Is This Answer Correct ? | 1 Yes | 9 No |
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