Question

Can someone please answer and explain a & b please, thank you.

A roll of ribbon was 12 meters long. Diego cut 9 pieces of ribbon that were 0.4 meter
each to tie some presents. He then used the remaining ribbon to make some
wreaths. Each wreath required 0.6 meter. For each question, explain your reasoning.
a. How many meters of ribbon were available for making wreaths?
b.
How many wreaths could Diego make with the available ribbon?

Answer 1

Answer: a. 8.4 meters b. 14 wreaths

Explanation:

The following equation shows the problem, with x representing the number of wreaths made:

12 = 9(0.4) + 0.6x

To answer a, get 0.6x alone:

12 = 9(0.4) + 0.6x

12 = 3.6 + 0.6x

8.4 = 0.6x

There were 8.4 meters available to make wreaths

To answer b, get x alone

8.4 = 0.6x

14 = x

Diego could make 14 wreaths with the available ribbon

Hope this helps!