Page 53 - Arithmetic

Exercise
1. Henry and John undertake work for $900. Henry can alone complete the work in 10 days while John can complete it in 15 days. But, with the help of their friend Ron they can complete it in 3 days. What is the share of John?
a) 270 b) 180 c) 300 d) 450 e) 510
2. Two farmers, Jerry and Donald, can plow a part of a field in 10 days and 6 days, respectively. Jerry started plowing the field alone, and after 2 days, Donald joined him and completed the work. Find the total number of days in which the plowing was completed.
a) 2 days b) 3 days c) 5 days d) 10 days e) Cannot be determined
3. Samantha and Ivanka can together complete the cleaning of a kitchen in 20 days. They worked together for 15 days, after which Ivanka left. In how many days can Samantha alone finish the work?
a) 30 days b) 40 days
c) 50 days d) 60 days e) Cannot be determined
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Arithmetic Concept