Each of the first 4 pit stops a racecar driver makes loses ten seconds off the leader. The pit crew makes adjustments, and at each of the next two pit stops he gains 7 seconds on the leader. How much time is the driver off the leader?
a. 40 seconds
b. 14 seconds
c. -26 seconds
d. -54 seconds
then c.-26...thanks :)
-40 + 14 = ?
Right.
You're welcome.
25, base 5
To determine how much time the driver is off the leader, we need to calculate the total time gained or lost at each pit stop.
Each of the first 4 pit stops loses 10 seconds off the leader, so the total time lost is 4 times 10 seconds, which equals 40 seconds.
At the next two pit stops, the driver gains 7 seconds on the leader at each stop. So the total time gained at these pit stops is 2 times 7 seconds, which equals 14 seconds.
To calculate how much time the driver is off the leader, we need to subtract the total time gained from the total time lost.
Total time lost: 40 seconds
Total time gained: 14 seconds
Time off the leader = Total time lost - Total time gained
Time off the leader = 40 seconds - 14 seconds = 26 seconds
Since the driver has lost 26 seconds to the leader, the correct answer is:
c. -26 seconds