Difficulty: Easy
Correct Answer: 8 : 7
Explanation:
Introduction / Context:
This problem uses an age ratio with a known sum to find present ages, and then asks for the ratio after a fixed time increment. It reinforces basic ratio partitions and linear updates to ages.
Given Data / Assumptions:
Concept / Approach:
If 6x + 5x = 44, then x is the basic unit of age. Compute each age, then add 8 years to both and simplify the resulting ratio.
Step-by-Step Solution:
6x + 5x = 44 ⇒ 11x = 44 ⇒ x = 4. Kamla = 6x = 24 years; Savitri = 5x = 20 years. After 8 years: Kamla = 32, Savitri = 28. Required ratio = 32 : 28 = 8 : 7.
Verification / Alternative check:
The sum remains consistent when adding the same number to both. The simplified ratio 8 : 7 directly results from dividing 32 and 28 by 4.
Why Other Options Are Wrong:
5 : 6 and 7 : 8 invert or misstate the direction. 14 : 13 is not equivalent to 8 : 7 and does not come from the computed ages.
Common Pitfalls:
Forgetting to simplify the final ratio or miscomputing x from the sum 44. Always check by multiplication back to 44.
Final Answer:
8 : 7
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