Question

3. Rahul has Rs720 in notes of denominations of Rs20 and Rs50, respectively. If the number of Rs50 notes is twice that of Rs20 notes, thus find the number of Rs50 notes.

Answer 1

Answer:

Let

No. of currency notes of Rs 50 = 3x

No. of currency notes of Rs 20 = 5x

No. of currency notes of Rs 10 = 25 - (3x+5x) = 25 - 8x

Amount made by Rs 50 notes = 50 × 3x = 150x

Amount made by Rs 20 notes = 20 × 5x = 100x

Amount made by Rs 10 notes = 10 × (25 - 8x) = 250 - 80x

Total money = 760

⇒ 150x + 100x + 250 - 80x =760

⇒ 170x = 510

⇒ x =3

Denominations:

Rs 50 = 3 × 3= 9

Rs 20 = 5 × 3= 15

Rs 10 = (25 - 8 × 2) = 9.

Answer 2

Answer:

rs 9 is a very correct answer