Question

Vani has 3 times as many two - rupee coins as he has five - rupee coins. If he has in all a sum of Rs. 77, how many coins of each denomination does he have​

Answer 1

Answer:

Step-by-step explanation:

LET THE NUMBER OF RS.5 COINS BE ∝

SO, THE NUMBER OF RS.2 COINS = 3∝

COST OF RS. 5 COINS = 5∝

COST OF RS. 2 COINS = 6∝

5∝ + 6∝ = 77

11∝ = 77

∝ = 77/11

∝ = 11

NUMBER OF RS.5 COINS = ∝ = 11

NUMBER OF RS.2 COINS = 3∝ = 11 × 3 = 33