20. Two numbers are in the ratio 3: 4 and if 4 are added to each, the ratio becomes 4:5. Find the numbers
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Let x be the proportion constant of the numbers in the first ratio
so the numbers are 3x and 4x
Now adding 4 to both the numbers and then taking ratio:
(3x+4)/(4x+4)=4/5
cross multiplying:
15x+20=16x+16
x=4
so the numbers are 3x=12 and 4x=16
so the numbers are 3x and 4x
Now adding 4 to both the numbers and then taking ratio:
(3x+4)/(4x+4)=4/5
cross multiplying:
15x+20=16x+16
x=4
so the numbers are 3x=12 and 4x=16
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