Can someone help with this math question?

Notice that the game collects the players £1 coin, whether or not it pays out £3.

Lily inserted a total of £12 (because she played 12 times).

If she got £6 profit, she must have been paid out £18 in winnings,

so she won 6 games (at £3 each)

and lost the other 6 games.

Mila inserted a total of £25.

If she had a loss of £4, then she must have been paid out £21 in winnings,

so she won 7 games

and lost the other 18 games.

Thus, Mila won more games (7 rather than 6).

I don't know exactly what math you're studying,

so I don't know how your instructor will expect your answer to look.

If, for instance, you're studying algebra, you might let

w represent the number of wins, and

g represent the number of games played.

The player's profit would then be

3w - p

(where a loss is represented by a negative profit)

and you'd just have to plug in the numbers for the two cases:

3w - 12 = 6 (for Lily)

3w - 25 = -4 (for Mila)

and solve for w in each case.