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രാധയുടെ വയസ്സിന്റെ നാലിരട്ടിയാണ് രാധയുടെ അമ്മയുടെ വയസ്സ്.ഇവരുടെ വയസ്സിന്റെ വ്യത്യാസം 30 എങ്കിൽ രാധയുടെ വയസ്സ് എത്ര ?

A12

B9

C8

D10

Answer:

D. 10

Read Explanation:

രാധയുടെ വയസ്സ്=x അമ്മയുടെ വയസ്സ്=4x 4x -x =30 3x = 30 x = 30/3 = 10 അതായത് x=10


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