Question

a lady has only 25paise and 50paise coins in her purse in All she has 40 coins worth rs12.75 how many each type of coins does she have​

Answer 1

Answer:

29 (25paisa) and 11 (50paisa)

Step-by-step explanation:

let number of 25paisa coins are x and that of 50 paisa are y

then x+y =40              .....(1)

25x/100 +50y/100 = 12.75

since 100 paisa = 1 rupee

25 paisa = 25/100

25x + 50y = 1275

x + 2y = 51                 ....(2)

by substracting 1st equation from 2nd

y=11

x = 40-11 = 29