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രവിയുടെ വയസ്സിന്റെ മൂന്നിരട്ടിയാണ് അച്ഛൻറ വയസ്സ്. അവർ തമ്മിലുള്ള വയസ്സിന്റെ വ്യത്യാസം 20 എങ്കിൽ രവിയുടെ വയസ്സ് എത്ര?

A10

B12

C20

D15

Answer:

A. 10

Read Explanation:

രവിയുടെ വയസ്സ് x ആയാൽ അച്ഛൻറ വയസ്സ് 3x 3x - x = 20 2x = 20 x = 10


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