Of the 12 runners in a race, 1 is a man and the rest are women. What is the ratio of the number of female runners to the total number of runners?
Write your answer as a fraction. Use a slash (/) to separate the numerator and
denominator

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.

Ithink i know it but i want to be sure so can you me out ?