allery6 વર્ષમાં માતા તેના બાળકની ઉંમર કરતાં બમણી હશે; 6 વર્ષો પહેલા તે તેનાથી ચાર ગણી હતી. મા હવે?
A28 વર્ષ
B36 વર્ષ
C30 વર્ષ
D32 વર્ષ
Answer & Solution
Correct answer: C. 30 વર્ષ
શરતો M = 2C + 6 અને M = 4C − 18 આપે છે, તેથી C = 12 અને M = 30 વર્ષ.
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