Question

a lady has 32 notes of denominations 100 & 500. if there total value is 8000, calculate the number of notes of 100

Answer 1

Answer:

20

Step-by-step explanation:

Let x be number of notes of denomination 100

Let y be number of notes of denomination 500

x + y = 32

100x + 500y = 8000

(100x + 500y)/100 = 8000/100

x + 5y = 80

(x + 5y = 80) - (x + y = 32) = (4y =48)

4y = 48

y = 48/4 = 12

x = 32 - 12 = 20

Thus the number of notes of denomination 100 is 20

Hope it helps!