In which of these is the original price highest:
(a) after a 5% discount, the price was $190 (b) after a 10% discount, the price was $180 (c) after a 20% discount, the price was $170 (d) after a 30% discount, the price was $140

c

Step-by-step explanation:

turn the percent into a decimal and × by the number you get that number that the percent represents in the number add it to the number and you get the original price

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.