Q.11 to Q.13 - EXERCISE 13B - Objective Questions - Time and Work - CLASS 8 RS Aggarwal Maths

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Издатель
11. A does 20% less work than B. If A can finish a piece of work in 7 1/2 hours, then B can finish it in
(a) 5 hours
(b) 5 1/2 hours
(c) 6 hours
(d) 6 1/2 hours
12. A can do a piece of work in 20 days which B alone can do it in 12 days. B worked at it for 9 days, A can complete remaining work in
(a) 3 days
(b) 5 days
(c) 7 days
(d) 11 days
13. A can do a piece of work in 25 days, which B alone can do it in 20 days. A started the work and was joined by B after 10 days. The work lasted for
(a) 12 1/2 days
(b) 15 days
(c) 16 2/3 days
(d) 14 days
R S Aggarwal Chapter 13 Time and Work Exercise 13B Class 8 Math Solutions
Категория
Разработка на iOS Язык программирования Objective-C
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