Answer:
120
Step-by-step explanation:
C
time is directly proportional to the number of problems in the set
=> x = ky
k = constant of proportionality
when k = 12
x = 12y
by making y the subject, we divide both sides by 12
=> y = x/12
you mean the decimal point?
You will know when you cross the decimal point when multiplying.
34
