Ask Question

Three siblings - Kate, Sarah, and Dave comitted themselves to volunteer 160 hours for a homeless charity to build new housing. Dave worked 15 hours more than Kate. Sarah worked 20 hours fewer than Kate. How many hours did each of these siblings volunteer?

+3
Answers (1)
  1. 6 March, 15:20
    0
    Kate 55 hours

    Dave 70 hours

    Sarah 35 hours

    Step-by-step explanation:

    Let k be Kate's hours

    Dave = 15 + k

    Sarah = k - 20

    Dave + Kate + Sarah = 160

    15 + k + k + k - 20 = 160

    3k - 5 = 160

    3k = 165

    k = 55

    Kate worked 55 hours

    Dave worked 70 hours

    Sarah worked 35 hours
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Three siblings - Kate, Sarah, and Dave comitted themselves to volunteer 160 hours for a homeless charity to build new housing. Dave worked ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers