Question

If 11 / 19 = A and 2 / 9 = B, then what is A - B?

• A. 0.36
• B. 0.56
• C. 0.76
• D. 0.6

Answer 1

Answer:

A. 0.36

Using normal division:

$A = \frac{11}{19}, \quad B = \frac{2}{9}$

So,

$A - B = \frac{11}{19} - \frac{2}{9}$

Take LCM of 19 and 9:

$= \frac{11 \times 9 - 2 \times 19}{171}$

$= \frac{99 - 38}{171}$

$= \frac{61}{171}$

So, the answer is:

$\boxed{\frac{61}{171}}$

$\frac{61}{171} \approx 0.36$