If the age of A is 5x and age of B is 7x. After 4 years there age in ratio 3:4 what is there present age
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let the age of A be 5x
--------------------- B =7x
after 4 a year the ratio will be=3:4
A/Q
5x+4/7x+4=3/4
4(5x+4)=3(7x+4)
20x +16=21x+12
-x= -4
x=4
the age of A=5x=5×4=20
B=7x=7×4=28
--------------------- B =7x
after 4 a year the ratio will be=3:4
A/Q
5x+4/7x+4=3/4
4(5x+4)=3(7x+4)
20x +16=21x+12
-x= -4
x=4
the age of A=5x=5×4=20
B=7x=7×4=28
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