The ratio between the present ages of a amd b is 4:5 and sum of their ages after 5 years is 100 years . what will be the ratio of their ages after 5 years ?
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4:5
After 5 years
4x+5,5x+5
sum=100
therefore 4x+5+5x+5= 100
9x+10=100
9x=100-10=90
x=90÷9
x=10
age of a = 4×10=40
age of b = 5×10=50
After 5 years
4x+5,5x+5
sum=100
therefore 4x+5+5x+5= 100
9x+10=100
9x=100-10=90
x=90÷9
x=10
age of a = 4×10=40
age of b = 5×10=50
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