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# CBSE Class 8 Answered

Devishi has a total of rupees 590 as currency notes in the denominations of RS50, RS20, RS10, the ratio of the numbers of RS50 notes and 20 notes is 3:5. If she has total of 25 notes how many of  cache denominations she has?
Asked by navaneeth1508 | 19 Jun, 2018, 10:42: PM
Let the number of Rs. 50 notes and Rs. 20 notes be 5x and 3x respectively.
As she ahs 25 notes in total.
The number of Rs. 10 notes = 25 - (3x + 5x) = 25 - 8x
The amount she has
Total money = 590
3x × 50 + 5x × 20  + 10 (25 - 8x) = 590
150x + 100x + 250 - 80x = 590
170x = 340
x = 2
The number of Rs. 50 notes = 3 × 2 = 6
The number of Rs. 20 notes = 5 × 2 = 10
The number of Rs. 10 notes = 25 - 8 × 2 = 9
Answered by Sneha shidid | 20 Jun, 2018, 09:24: AM

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