Hi there, anybody know how to do this one? Not so sure where my method goes wrong:
Q: Pate, Kate and Mark charged a total of 162hrs in a certain project.
If Pat charged twice as much time in the project as Kate and 1/3 as much time as Mark, how many hrs did Mark charge to the project more than Kate?
a) 18
b) 36
c) 72
d) 90
e) 108
My attempt is as follows:
1) P+K+M=162, Question is M-K=?
2) P=2*K -> K=(1/2)*P
3) P=(1/3)*M -> M=3*P
4) substitute 2) & 3) in 1) gives unfortunately wrong answer... correct answer is (d)
Thanks in advance.
Q: Pate, Kate and Mark charged a total of 162hrs in a certain project.
If Pat charged twice as much time in the project as Kate and 1/3 as much time as Mark, how many hrs did Mark charge to the project more than Kate?
a) 18
b) 36
c) 72
d) 90
e) 108
My attempt is as follows:
1) P+K+M=162, Question is M-K=?
2) P=2*K -> K=(1/2)*P
3) P=(1/3)*M -> M=3*P
4) substitute 2) & 3) in 1) gives unfortunately wrong answer... correct answer is (d)
Thanks in advance.
m
