Question

dave is twice as oid as bob,who is 3 years oider than steve. if steve is 4a years oid, dave age is ?

Answer 1

Step-by-step explanation:

let Dave age be X, Bob be y and Steve is 4 years old

ATQ : X=2y

Y=3+4= 7yrs. -------(1)

From (1),

X=2(7)

=14 yrs old

Therefore, Dave's age will be 14yrs

Answer 2

Answer:

8a+6

Step-by-step explanation

let

dave be X

bob be Y

steve be 4a

ATQ ; X  =2Y

          Y =3+4a ........i

     now put value from eq 1 in the above

    X =2(3+4a)

    X =8a+6