P5 Math - Ratio

[bits_n_bites]

.
Four children Ken, Lionel, Melvin and Nick each have some marbles.
The number of marbles that Ken has is 1/2 of the total number of marbles that Lionel, Melvin and Nick have.
The number of marbles that Melvin has is 1/4 of the total Ken, Lionel and Nick have.
The number of marbles that Lionel has is 2/3 of the total number of marbles that Ken, Melvin and Nick have.
If Nick has 44 marbles, how many marbles should Lionel give to Melvin so that Ken & Melvin have the same number of marbles?