Shuruchi has received total of rupees 780
as currency note in the denomination of 10,20 &
50.The ratio of number of 50 notes and 10 rupees
notes is 3:2.If she received total 32 notes
Question:4) The ratio of number of 50
rupees notes to 20 rupees notes
A)
7:5
B)
8:11
C)
8:3
D)
3:11
Answers
Step-by-step explanation:
I think option is not there answer is 5:2
Given : Shuruchi has received total of rupees 780 as currency note in the denomination of 10,20 & 50.
The ratio of number of 50 notes and 10 rupees notes is 3:2.
She received total 32 notes
To Find : The ratio of number of 50 rupees notes to 20 rupees notes
A) 7:5
B) 8:11
C) 8:3
D) 3:11
Solution:
The ratio of number of 50 notes and 10 rupees notes is 3:2.
50 Rs notes = 3x
10 Rs Notes = 2x
20 Rs notes = y
Value = 50 * 3x + 10 * 2x + 20y = 780
=> 15x + 2x + 2y = 78
=> 17x + 2y = 78
=> 17 x = 2(39 - y)
x = 2 y = 22
x = 4 y = 5
Two possible cases:
50 10 20 Total
Notes 6 4 22 32
Value 300 40 440 780
Notes 12 , 8 5 25
Value 600 80 100 780
1st case is correct
The ratio of number of 50 rupees notes to 20 rupees notes
6 : 22 = 3 : 11
correct option D) 3:11
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