Answer :
Answer:
1 minutes 33 seconds
Step-by-step explanation:
28 * 60 seconds = 1680 seconds
1680 / 18 = 93.3 seconds or just about 1 minutes and 33 seconds per problem
Answer:
1 minutes 33 seconds
Step-by-step explanation:
28 * 60 seconds = 1680 seconds
1680 / 18 = 93.3 seconds or just about 1 minutes and 33 seconds per problem