You must first set up an equation for this problem. Your equation is 8+3x=128. If we subtract 8 from each side we get 3x=120. If we then divide both sides by 3 we get x=40. Therefore your number is 40 because 8+3*40=128.
D. both climbers rested on the wall for 2 minutes
Answer:
C
Step-by-step explanation:
Only option C values add up to 100%