Abike race is 50 miles long. if each lap is 10 miles and 4 laps have already been completed, how many more laps are left in the race?

You know that the total race is 50 miles. If each lap is 10 miles and 4 laps have already been completed, there would be one lap left.

This is because of the following,

10x4 = 40

50-40 = 10

1 lap= 10 miles

If a bike race is 50 miles long, and each lap is 10 miles, then we will count by tens per lap.  So if 4 laps have already been completed, we take 10 x 4 to get 40.  If each lap is 10 miles long, then all we need is 1 more lap to get to 50.  So your answer would be 1 lap is left.  Hope this helped!

-TTL

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.