Two numbers are such that their sum, difference and product are in the ratio 11 : 1 : 90. Find the numbers. दो संख्याएँ ऐसी हैं कि उनका योग, अंतर और गुणनफल 11 : 1 : 90 के अनुपात में हैं। संख्याएँ ज्ञात कीजिए।
A
18, 15 (18, 15)
B
20, 10 (20, 10)
C
22, 11 (22, 11)
D
12, 10 (12, 10)
or press Space / Enter
Correct Answer 18, 15
Explanation
Let numbers be a, b. (a+b)/(a-b) = 11/1 => 12b = 10a => a/b = 6/5. Let a=6k, b=5k. Product ab = 30k². (a+b)/ab = 11/90 => 11k / 30k² = 11/90 => 1/30k = 1/90 => k=3. Numbers: 18, 15.