A number plus half of the number,minus 20 is the same as one-fourth of the original number. What is the number?
1 answer:
Answer:
16
Step-by-step explanation:
Let the number = x
x + x/2 - 20 = 1/4 x
3/2 x - 20 = 1/4x Multiply by 4
3*2 x - 80 = x
6x - 80 = x
6x - x - 80 = 0
5x - 80 = 0
5x = 80
x = 16
Check
16 + 8 - 20 = 1/4 * 16
24 - 20 = 4
4 = 4
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