allery6 वर्ष में एक माँ अपने बच्चे की उम्र से दोगुनी होगी; 6 वर्ष पहले वह इससे चार गुना थी। अब माँ?
A28 वर्ष
B36 वर्ष
C30 वर्ष
D32 वर्ष
Answer & Solution
Correct answer: C. 30 वर्ष
शर्तें देती हैं M = 2C + 6 और M = 4C −
18, तो C = 12 और M = 30 वर्ष।
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