the sum of two numbers is 20 and their difference is 5/4. Find the ratio of the numbers?
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Answered by
4
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Let the numbers be x and y
x+y=20....... (1)
x-y=5/4......(2)
Adding (1) &(2)
x+y+x-y=20+5/4
2x=85/4
x=85/2
x+y=20
85/2+y=20
y=-45/20
Ratio=85/2÷-45/20
=170:9
Let the numbers be x and y
x+y=20....... (1)
x-y=5/4......(2)
Adding (1) &(2)
x+y+x-y=20+5/4
2x=85/4
x=85/2
x+y=20
85/2+y=20
y=-45/20
Ratio=85/2÷-45/20
=170:9
armanalam3:
it does not match with the answer
I have found the mistake
Answered by
0
Answer:
Ratio = 20+5/3/20-5/2
=22.5/17.5
=225/175
=9/7
=9:7
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