Question

1. assessment there are 68 runners in a marathon. 28 runners finish the race. then 22 more runners finish the race. how many runners have not finished the race? which pair of equations can you use to solve this problem? a 68 + 28 = 96; 96 - 22 = 74 c 68 - 28 = 40; 40 - 22 = 18 b 68 + 28 = 96; 28 + 22 = 50 d 68 - 28 = 40; 40 + 22 = 66

Explanation:

Step1: Calculate total finishers

$28 + 22 = 50$

Step2: Subtract finishers from total runners

$68 - 50 = 18$

Step3: Match to equation pair

First subtract initial finishers: $68 - 28 = 40$, then subtract remaining finishers: $40 - 22 = 18$

Answer:

C. $68 - 28 = 40$; $40 - 22 = 18$