Answer: About 49.
Explanation:
16 × 3 = 48.
With some left over, you can infer they can make atleast 1 more bar.
48 + 1 = About 49 chocolate bars.
Answer:

Step-by-step explanation:
Given

Required
Cost of x pounds
To do this we simply multiply x by the rate



Are you sure about your solves??
I think correct answer is 6,
I don't know but the standard way is in the photo:
He brought 6 math books and 6 science books
50 - 40x ≥ 200
-40x ≥ -300
x ≤ 7.5
40$ can be withdrawn from the account 7 weeks if she wants to maintain a balance at least 200<span />