Question

In a game of 100 points, A can give B 20 points and C 28 points. Then, B can give C:

• A. 8 points
• B. 10 points
• C. 14 points
• D. 40 points

Answer 1

The correct option is B 10 points

A : B = 100 : 80.
A : C = 100 : 72.
$\therefore \frac{B}{C}=\left(\begin{array}{c}\frac{B}{A}\times \frac{A}{C}\end{array}\right)=\left(\begin{array}{c}\frac{80}{100}\times \frac{100}{72}\end{array}\right)=\frac{100}{90}=100:90.$
$\therefore$ B can give C 10 points.