the sum of two numbers is 90 and their ratio is7:8.find the numbers
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Answered by
0
Ratio of the two numbers:
Let: x/y = 7/9
x = (7/9) y - eq. 1
Sum of the two numbers:
Let: x + y = 320 - eq. 2
Substitute 1 to 2:
(7/9)y + y = 320
y = 180
Substitute value of y to eq. 1
x = (7/9) * 180
x = 140
Therefore the two numbers are 140 and 180.
But wait there’s more!
Substitute the two numbers to any of the equations:
140 + 180 = 320
320 = 320
or
(140/180) = (7/9)
(7/9) = (7/9)
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Answered by
1
Answer:
= 42, 48.
Step-by-step explanation:
Lets take 7:8 as 7x and 8x.
= 7x + 8x = 90
= 15x = 90
= x = 90/15
= x = 6.
The numbers value = 7(6) and 8(6)
= 42, 48.
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