Q21. Sumit has Rs x and it is to be divided equally among 6 children, each child would get O Rs (X - 6) O Rs 6x O Rs (x/6) O RS (x + 6)
Answers
Answered by
23
Step-by-step explanation:
(480−12x)(x+20)=480x
480x+9600−12x²
−240x=480x
12x²+240x−9600=0x²
+20x−800=0x²
+40x−20x−800=0
x(x+40)−20(x+40)=0
(x−20)(x+40)=0
x=+20x=−40
x=−40 is not possible
∴x=20 children
Answered by
9
Answer:
No. of children=x
Total amount=480
Amount each children get =
x
480
Given if children +20=x+20
Amount each child gets
x
480
−12
We know that (
x
480
−12)(x+20)=480
(480−12x)(x+20)=480x
480x+9600−12x
2
−240x=480x
12x
2
+240x−9600=0
x
2
+20x−800=0
x
2
+40x−20x−800=0
x(x+40)−20(x+40)=0
(x−20)(x+40)=0
x=+20x=−40
x=−40 is not possible
∴x=20 children
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