NIMCET 2020 Reasoning PYQ — A total of 324 notes comprising of Rs. 20 and Rs. 50 denomination… | Mathem Solvex | Mathem Solvex
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NIMCET 2020 — Reasoning PYQ
NIMCET | Reasoning | 2020
A total of 324 notes comprising of Rs. 20 and Rs. 50 denominations make a sum of Rs. 12450. The number of Rs. 20notes is
Choose the correct answer:
A.
200
B.
144
C.
125
(Correct Answer)
D.
110
Correct Answer:
125
Explanation
Given: Total number of notes of Rs. 20 and Rs. 50 = 324 Total Sum = Rs. 12450 Concept used: Value of note × Number of total notes = Total amount Calculation: Let the number of Rs. 20 notes be x.
No. of Rs. 50 notes = 324−x
20x+50(324−x)=12450
20x+16200−50x=12450
−30x=12450−16200
30x=3750
x=125
∴ The number of Rs. 20 notes is 125.
Explanation
Given: Total number of notes of Rs. 20 and Rs. 50 = 324 Total Sum = Rs. 12450 Concept used: Value of note × Number of total notes = Total amount Calculation: Let the number of Rs. 20 notes be x.
