Question

if a 3 biscuits cost Rs 10 then how much 50

Answer 1

the answer will be 500/3

Answer 2

If 3 biscuits cost Rs. 10
Hence,
$\frac{3}{10} = \frac{50}{x} \\ 3 \times x = 10 \times 50 \\ 3x = 500 \\ x = \frac{500}{3} \\ x = rs. \: 166.67$
Ans:
50 biscuits will costs Rs. 166.67

HOPE IT HELPS