A clock lost 4 minutes and 15 seconds in 85 days. How many seconds did it lose per day?

Question

Quizplus · Accepted Answer

The Answer is 3
We are asked for seconds lost per day. When we see the word "per", we know that means to divide. You can actually think of "per" as the division sign in the problem.
Answer = seconds lost / days
We are given the number of days (85). However, we still need to convert 4 minutes and 15 seconds to just seconds.
Convert 4 minutes into seconds:
4 x 60 = 240 seconds
Don't forget to add back the 15 seconds from earlier in the problem:
240 + 15 = 255 seconds
So now we have:
Answer = 255 seconds lost / 85 days
Answer = 3 (seconds lost per day)

A Clock Lost 4 Minutes and 15 Seconds in 85