Solving word problems

This task is about solving multiplication word problems. 
illustration: selection of number sentences with an unknown number
Solve the following word problems below. An equation is given for the first two to help you.

Question 1Change answer

a) A licorice strap is 40 cm long.
8 × box with question mark = 40
How many 8 cm pieces could it be cut into?

Question 1Change answer

b)  All the helpers at the fair wore a 6 cm piece of red ribbon. 54 cm of ribbon was used. 
6 × box with question mark = 54
How many helpers were there?

Question 1Change answer

c) Kerrin had 35 metres of string. He cut it into 5 equal lengths.
i) How long was each piece?  metres
ii) Write down an equation to describe how Kerrin cut his string. The equation should use multiplication like the examples before.

Question 1Change answer

d) i) Complete the following word problem for this equation:
6 × box with question mark = 24
     Josiah has 24 marbles. He then ...
 
ii) What number is missing from the equation?