Question

1. jeannine is planning dinner and a movie with her partner. the movie they will see starts at 7:30 p.m., and they need at least an hour and a half to eat dinner. what is the latest time that they should arrive at a restaurant to eat dinner?

○ 5:45 p.m
○ 6:30 p.m
○ 9:00 p.m
○ 6:00 p.m

Explanation:

Step1: Understand the problem

We need to find the latest time to arrive at the restaurant so that they can finish dinner (which takes 1.5 hours) before the movie starts at 7:30 p.m. So we subtract 1 hour and 30 minutes from 7:30 p.m.

Step2: Subtract time

1 hour and 30 minutes is equal to 1.5 hours. Subtract 1 hour from 7:30 p.m., we get 6:30 p.m. Then subtract another 30 minutes from 6:30 p.m., we get 6:00 p.m.? Wait, no, wait. Wait, 7:30 p.m. minus 1 hour is 6:30 p.m., minus 30 minutes more is 6:00 p.m.? Wait, no, let's do it properly. 1 hour and a half is 90 minutes. 7:30 p.m. is 7 hours and 30 minutes. Subtract 90 minutes (1 hour 30 minutes) from 7 hours 30 minutes. 30 minutes minus 90 minutes is not possible, so we borrow 1 hour (60 minutes) from the 7 hours. So 7 hours 30 minutes becomes 6 hours 90 minutes. Now subtract 90 minutes: 6 hours 90 minutes - 90 minutes = 6 hours, which is 6:00 p.m.? Wait, no, that can't be. Wait, maybe I made a mistake. Wait, 7:30 p.m. minus 1 hour is 6:30 p.m., minus 30 minutes is 6:00 p.m. But let's check the options. Wait, the options are 5:45, 6:30, 9:00, 6:00. Wait, maybe my calculation is wrong. Wait, 1 hour and a half is 1.5 hours. 7:30 p.m. minus 1.5 hours. Let's convert 7:30 p.m. to minutes since midnight: 7*60 + 30 = 450 minutes. Subtract 90 minutes: 450 - 90 = 360 minutes. Convert 360 minutes back to hours: 360 / 60 = 6 hours. So 6:00 p.m. But wait, let's check again. Wait, 6:00 p.m. plus 1 hour and 30 minutes is 7:30 p.m., which is correct. So the latest time to arrive is 6:00 p.m. Wait, but let's check the options. The options are 5:45, 6:30, 9:00, 6:00. So 6:00 p.m. is an option. Wait, but maybe I messed up. Wait, 7:30 minus 1 hour 30 minutes: 7:30 - 1:30 = 6:00. Yes, that's correct.

Answer:

6:00 p.m. (the option with 6:00 p.m.)