-
aaggar7
- Master | Next Rank: 500 Posts
- Posts: 124
- Joined: Sun Mar 11, 2012 8:48 pm
- Thanked: 9 times
- Followed by:1 members
Hi,I have tried two approach for the below question and I am getting different answers.
Please suggest which one is correct and where I am going wrong on the other approach
Jane started baby-sitting when she was 18 years old. Whenever she baby-sat
for a child, that child was no more than half her age at the time. Jane is currently
32 years old, and she stopped baby-sitting 10 years ago. What is the
current age of the oldest person for whom Jane could have baby-sat?
Jane's age = J
Child age = C
Approach 1
-----------
Let J=18 at start of babysitting
C's maximum age at that time=9
Jane's has stopped babysitting at 22,so the max age of C at that time will be 11.
J's current age = 32
After 10 yrs the C's age will be 11+10=22
Answer = 22
Approach 2
-----------
J started baby sitting started at 18 and current age is 32.Diff is (32-18)= 14
Age of C at start = 9,current age = 9 + 14 = 23
Answer = 23
Please suggest which one is correct and where I am going wrong on the other approach
Jane started baby-sitting when she was 18 years old. Whenever she baby-sat
for a child, that child was no more than half her age at the time. Jane is currently
32 years old, and she stopped baby-sitting 10 years ago. What is the
current age of the oldest person for whom Jane could have baby-sat?
Jane's age = J
Child age = C
Approach 1
-----------
Let J=18 at start of babysitting
C's maximum age at that time=9
Jane's has stopped babysitting at 22,so the max age of C at that time will be 11.
J's current age = 32
After 10 yrs the C's age will be 11+10=22
Answer = 22
Approach 2
-----------
J started baby sitting started at 18 and current age is 32.Diff is (32-18)= 14
Age of C at start = 9,current age = 9 + 14 = 23
Answer = 23
