Question

Q19: Srishti has a total of Rs 780 as currency notes in the denominations of Rs 10, Rs 20 and
Rs 50. The ratio of the number of Rs 50 notes and Rs 10 notes is 3:2. If she has a total of 32
notes, how many notes of each denomination she has?

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Answer 1

Answer:

Let srishti has x no. of 10 rs notes, y no. of 20 rs notes, z no. of 50 rs notes

as no. of notes of 50 and 10 is in ratio 3:2

so z:x = 3:2

now she had total of 32 notes

so x + y + z = 32.....@

and also total currency is 780

so

10x + 20y + 50z = 780

as z = (3/2)x

the equation becomes

10x + 20y + 75x = 780

85x + 20y = 780......#

from @

x + y + (3/2)x = 32

(5/2)x + y = 32

multiplying the equation by 20

50x + 20y = 640

subtracting it from #

35x = 140

x = 4

z = (3/2)4 = 6

4 + 6 + y = 32

y = 22

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

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