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Question

Mona is four years younger than Sona, who is four times as old as Rekha. Three years ago, Rekha was 10 years old. What is the present age (in years) of Mona?

मोना, सोना से चार वर्ष छोटी है, सोना की आयु रेखा की आयु की चार गुनी है। तीन वर्ष पूर्व रेखा की आयु 10 वर्ष थी। तो मोना की वर्तमान आयु (वर्ष में) क्या होगी?

A
48
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B
50
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C
52
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D
54
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Solution

The correct option is A 48
Let the current age of Sona be 4x years.
Age of Mona = 4x – 4
Age of Rekha = x.
According to the question,
X – 3 = 10
X= 13
Hence, the required age = 4 × 13 – 4 = 48
years.

माना कि सोना की वर्तमान आयु 4x वर्ष है।
मोना की आयु = 4x – 4
रेखा की आयु = x
प्रश्नानुसार, x – 3 = 10 Þ x = 13
अत: अपेक्षित आयु = 4 × 13 – 4 = 48 वर्ष

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