Question
Neeta is 15 years older than Reena. Five years ago, the
ratio of Neeta's age to Reena's age was 11:8. What is Neeta's current age?Solution
Let present age of Neeta be ‘x’ years. So, present age of Reena = ‘x – 15’ years According to the question, (x – 5)/(x – 15 – 5) = 11/8 Or, 8x – 40 = 11x – 220 Or, x = 60 Therefore, present age of Neeta = 60 years
A cone has a base radius of 6 cm and a height of 8 cm. Find its volume and slant height (use π = 3.14).
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