Need help one number 1 pls

If one memento = .1lb, how many mementos we need to have 11 lbs
m = 11/.1
m=110
So, 110 mementos will weigh 11 lbs

If one cloth = .5 lbs, how many pieces of clothes we need to have 11 lbs?
C =11/.5
C=22
So 22 pieces of clothes will weigh 11 lbs

To onboard,
Mementos + clothes should 30 pieces weighing 11 lbs in total.

Now we ask how many pieces of mementos = 1 lb? We ind out by dividing
110 mementos/11 lbs
Number of mementos we need to give us 1 1 lb

110/11 = 10 mementos

For clothes

22/11 = 2 clothes

So
10 pieces of mementos = 1 lb
2 pieces of clothes = 1 lb

Now in order to carry 30 pieces weighing 11 lbs combined, we need

10 mementos which total weight = 1 lb
20 clothes which total weight = 10 lbs
10+20=30 items and 1+10= 11 lbs