alleryपाच वर्षांपूर्वी आईचे वय मुलाच्या वयाच्या तिप्पट होते; आता त्यांच्या वयांची बेरीज 50 आहे. मुलाचे वय आहे
A10
B12
C20
D15
Answer & Solution
Correct answer: D. 15
आईचे वय m आणि मुलाचे वय s मानल्यास: m - 5 = 3(s - 5) आणि m + s = 50 यावरून s = 15 मिळते.
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