The ratio of two numbers is 5:4 and their sum is 180. What is the smaller number? दो संख्याओं का अनुपात 5:4 है और उनका योग 180 है। छोटी संख्या क्या है?
A
80 (80)
B
100 (100)
C
90 (90)
D
75 (75)
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Correct Answer 80
Explanation
Total parts = 5 + 4 = 9. Value of 1 part = 180 / 9 = 20. Smaller number = 4 parts = 4 * 20 = 80.