Two numbers are such that if 7 is added to the first
number, a number twice the second number is
obtained. If 20 is added to the second number,
the number obtained is four times the first number.
Find the two numbers.
Answers
Answered by
1
Let the numbers be x and y
if 7 is added to first number a number twice the
second number is obtained.
x+7 = 2y
=> x = 2y - 7
If 20 is added to the second number, number obtained is four times the first number
y+20 = 4x
=> y + 20 = 4(2y - 7)
=> y + 20 = 8y - 28
=> y - 8y = -28 - 20
=> -7y = -48
=> y = 48/7
x = 2y - 7 = 2×(48/7) - 7 = 96/7 - 7 = (96-49)/7 = 47/7
The numbers are 48/7 and 47/7
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Answered by
4
Answer:
Hope this is helpful.
Step-by-step explanation:
x= 47/7 ,y= 48/7.
If correct mark as brainliest.
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