Question help- Word problem

GRE Quant Problem Solving
1

Can you please help me with the approach regarding with this question? Although I tried to solve it but not able to get an answer.

To make a tart for 6 people, Karin needs 1 112 lb. of
peaches and 213 cup of apricot jam. How much does
she need for 20 people?

Official Answers: 5 lbs peaches, 2 2/9 cups apricot jam.

My approach:
As 1 lb= 16 ounces
1 cup= 8 ounces

so
3/2 lb= 24 ounces
and
24 ounces= 3 cups of peaches

Total= 3 cups of peaches+ 2/3 cup of jam
= 11/3 cup

Now, using proportion: 6/20= 11/3/x

After this step, my answer is 73.3/6.

Could you please check in which step I got wrong?

Question Source: Master Math: Solving Word Problems by Brita Immergut (Book)

2

Ehh you don’t need to convert it into ounces and cups, because the answers are in the same units

Amount of peaches for 6 people = 3/2 lb
Amount of peaches for 1 person = \frac{3}{2 * 6} = \frac{1}{4} lbs
Amount of peaches for 20 people = 20 * \frac{1}{4} = 5 lbs

Similarly, amount of apricot jam for 20 people = \frac{2}{3*6} * 20 = \frac{20}{9} = 2\frac{2}{9} cups