Question

A piggy bank contains 510. If the number of 20 notes is one more than that of 50. Find the number ofnotes of each type.17.​

Answer 1

Answer:

notes of Rs50 is 7

and notes of Rs20 is 8

Step-by-step explanation:

let the note of 50 = x

then, note of 20 = x + 1

total rupees contain piggy bank = 510

50x + 20(x + 1) = 510

50x + 20x + 20 = 510

70x + 20 = 510

70x = 510 - 20

70x = 490

x = 490/70

x = 7

notes of Rs50 = x = 7

notes of Rs20 = x+1 = 7+1 = 8