The correct answer is choice C
Answer:
6 weeks
Step-by-step explanation:
Set up a proportion where x is the amount of time with 12 pupils:
= 
Cross multiply and solve for x:
4x = 24
x = 6
So, it will take 12 pupils 6 weeks to complete the job.
The sum is composite because it is the same as multiplying the number by two.
Answer:
550
Step-by-step explanation: