Refer to P6 Conquer Problem Sums Chap 8, Q9(a).
Not really understand the answer given. Need help to show another explanation on this question. Thank you.

Lillian, Siti and Janet shared $165. Lillian had $K more than Siti and twice as much as Janet.
a) How much does Siti have in terms of K?

Lillian, Siti and Janet shared $165. Lillian had $K more than Siti and twice as much as Janet.
a) How much does Siti have in terms of K?

Part a) of this question does not require to find out the answer in dollars and cents. Instead it wants the student to be able to represent the answer in terms of "K". This is similar to the example given in Chapter 8 on page 120, where they are solving, at first, with an "x" in the solution. Only for part b) do we include the actual value for "X" or "K" as for this specific question. I have given the same solution, with more details.

Sorry for the late reply.
Thanks for solving the question but can you explain again from this part of the answer -
how do you get 3k/2?

Hi again, For that we just re-arranged the equation. For example step by step:

2u + (2u+K) + (1u+K/2)
--> 2u + 2u + K +1u +K/2
--> 5u +K + K/2
--> 5u +2/2K + 1/2K
--> 5u +3/2K

Thanks Chris. Now my son has to explain to me the rest of the answer if he understand..ha..ha.`