alleryબે મિત્રોની ઉંમર 4 : 5 ના ગુણોત્તરમાં છે. 6 વર્ષ પછી તે 5 : 6 થશે. નાની ઉંમરના મિત્રની વર્તમાન ઉંમર કેટલી છે?
A28
B24
C30
D20
Answer & Solution
Correct answer: B. 24
(4x + 6)/(5x + 6) = 5/6 ઉકેલતાં x = 6 મળે છે, તેથી નાની ઉંમરના મિત્રની ઉંમર 4 x 6 = 24 થાય.
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