Rita has 15 notes in denomination of Rs. 10 and Rs. 20. If the amount with her is Rs.200, find the number of notes in each denomination with her
Answers
Answer:
Rita has 15 notes in denomination of Rs. 10 and Rs. 20. If the amount with her is Rs.200, find the number of notes in each denomination with her
Answer:
Rs. 10 notes are 10 in number and Rs. 20 notes are 5
Step-by-step explanation:
Given :
Total amount = 200 Rs.
Denominations of = Rs. 10 and Rs. 20.
Total notes = 15
To find :
Number of each type of notes
Solution :
Let x denote = Rs. 10
Total notes = 15
Number of notes of Rs. 20 = (15 - x)
Total money = Rs. 200
➨ 10x + 20 (15 -x) = 200
➨ 10x + 300 - 20x = 200
➨ 10x - 20x = 200 - 300
➨ -10x = -100
➨ 10x = 100
➨ x = 100 / 10
➨ x = 10
No. of notes of Rs. 10 = 10
No. of notes of Rs. 20 = (15 - x)
➨ (15 - 10)
➨ 15 - 10
➨ 5
.°. Rs. 10 notes are 10 in number and Rs. 20 notes are 5