PUZZLE 058 Level Up

A group of monsters has appeared!
Defeat all of the monsters and level up all three of the heroes to level 5.
They each need a different number of experience points to level up: blue needs 5, yellow needs 10, and red needs 15.
Slide the heroes on top of the enemies to attack.
It's also possible to undo a move by touching the attacked enemy.
Let the battle commence!

Hint 1

When all of the monsters are defeated, the heroes will have gained 120 experience points between them.
Figure out who needs to attack which monsters so that none of those points go to waste.

Hint 2

To attain level five, blue needs 20 points, yellow needs 40 points, and red needs 60 points.
So that none of the points are wasted, be sure to figure out combinations that add up to multiples of ten.

Hint 3

If the monsters worth values with a 1, 2 and 7 in the units place are attacked together, it would add up to a figure that is a multiple of ten.

Super Hint

Here's one possible way to tackle this.
Yellow needs 40 points, so the can attack the monsters worth 15 and 25.
Then you just need to attack the remaining monsters so that blue scores 20 and red scores 60.

Answer for 'Level Up'

The answer is as follows.

blue=8 and 12
yellow=1, 2, 7 and 30
red=3, 15, 17 and 25