CBSE Class 9 Answered
Q.1 After 12 years Kanwar shall be 3 times as old as he was 4 years ago. find his present age?
Q.2 The sum of the digits of a two-digit number is 8. When the digits are reversed the number increases by 18 what is the original number?
Q.3 Carpenter charged Rs. 2500 for making a bed. The cost of materials used is Rs. 1100 and the and the labour charges Rs. 200/hr. Did how many hours did the carpenter work?
Asked by deeptimandawaria | 31 May, 2019, 01:17: PM
Expert Answer
Q.1: After 12 years Kanwar shall be 3 times as old as he was 4 years ago. find his present age?
Solution:
Let the present age of Kanwar be x years.
ACcording to the condition in the question, we get
x + 12 = 3(x - 4)
→ x + 12 = 3x - 12
→ 2x = 24
→ x = 12
Therefore the present age of Kanwar is 12 years.
Answered by Yasmeen Khan | 31 May, 2019, 03:09: PM
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