A age is six time of B four years hence the age of a will be four times age of b. find present ages of a and b.
Answers & Comments
nammu8
Let the present ages A be and B A = 6B A-6B = 0..... (1) four years hence ages will be (A+4) (B+4) A+4 = 4(B+4) A+4 = 4B+16 A-4B=16-4 A-4B =12 ......(2) on subtracting (1) with (2) A-6B=0 A-4B=12 ------------- B= 6 A= 36 hence; A is 36 years old B is 6 years old.
Answers & Comments
A = 6B
A-6B = 0..... (1)
four years hence ages will be
(A+4) (B+4)
A+4 = 4(B+4)
A+4 = 4B+16
A-4B=16-4
A-4B =12 ......(2)
on subtracting (1) with (2)
A-6B=0
A-4B=12
-------------
B= 6
A= 36
hence; A is 36 years old
B is 6 years old.