Question

The cafe where you work just ran out of coffee, and you are at the store to buy 11

2

112 pounds of coffee. You have put a can with 3

4

34 pound of coffee into your shopping cart. How many more pounds of coffee do you need?

Answer 1

$$1\dfrac{1}{2}-\dfrac{3}{4}=\dfrac{3}{2}-\dfrac{3}{4}=\dfrac{6-3}{4}=\dfrac{3}{4}$$

I need 3/4  pounds of coffee .