Question

If a/b = 1/3 and 9a + b = 48, then find the value of a.
A)2
B)3
C)4
D)6

Answer 1

Answer:

Step-by-step explanation:

a/b = 1/3

So, 3a = b

substitute b in 9a + b = 48

9a + 3a = 48, 12a = 48

Hence

a = 4

Answer 2

Answer:

$a = 4$

Step-by-step explanation:

According to the question,

Given,

$\frac{a}{b} = \frac{1}{3}$

and

$9a + b = 48$

So,

$b = 3a$

substitute b in $9a + b = 48$

$9a + 3a = 48, \\\\12a = 48\\\\a = \frac{48}{12}\\\\\\a = 4$

Hence, the value of $a = 4$.