Answer:7/6 Times longer OR 1 1/6 OR 1 HOUR AND 10 MINS LONGER
Step-by-step explanation:To find out how much longer it took Claire to mow the lawns last week compared to this week, you need to calculate the total time she spent mowing the lawns in each week and then compare the two totals.
Last week, Claire mowed seven lawns, spending 7/12 hour on each lawn. To find the total time spent mowing last week, you multiply the time per lawn (7/12 hour) by the number of lawns (7):
Total time last week = (7/12) * 7
This equals 49/12 hours.
This week, Claire mowed the same lawns, but she only spent 5/12 hour on each lawn. To find the total time spent mowing this week, you again multiply the time per lawn (5/12 hour) by the number of lawns (7):
Total time this week = (5/12) * 7
This equals 35/12 hours.
Now, to determine how much longer it took Claire last week compared to this week, you can subtract the total time this week from the total time last week:
Difference = Total time last week - Total time this week
Difference = (49/12) - (35/12)
Difference = 14/12
You can simplify this fraction:
Difference = 7/6
So, Claire took 7/6 times longer to mow the lawns last week compared to this week.