Chain rule problems - chain rule aptitude questions

Chain Rule Problems & Chain Rule Aptitude Questions with Answers:

9. 39 persons can repair a road in 12 days, working 5 hours a day. In how many days will 30 persons, 6 hours a day, complete the work?

(A) 11

(B) 13

(C) 15

(D) 17

10. If 8 men can reap 80 hectares in 24 days, then how many hectares can 36 men reap in 30 days ?

(A) 300

(B) 350

(C) 400

(D) 450

11. 400 persons, working 9 hours per day complete 1⁄4^th of the work in 10 days. The number of additional persons, working 8 hours per days, required to complete the remaining work in 20 days, is:

(A) 575

(B) 275

(C) 300

(D) 325

12. If 18 binders bind 900 books in 10 days, how many binders will be required to bind 660 books in 12 days?

(A) 15

(B) 13

(C) 12

(D) 11

13. A rope makes 70 round of the circumference of a cylinder whose radius of the base is 14 cm. How many times can it go round a cylinder with radius 20 cm?

(A) 41

(B) 49

(C) 51

(D) 69

(E) None of these

14. If the cost of x metres of wire is d rupees, then what is the cost of y metres of wire at the same rate?

(A) Rs.

(B) Rs. xd

(C) Rs. yd

(D) Rs.

15. If a quarter kg of potato costs 60 paise, how many paise will 200 gm cost?

(A) 48 paise

(B) 54 paise

(C) 56 paise

(D) 72 paise

16. A flagstaff 17.5 high casts a shadow of length 40.25 m. The height of the building, which casts a shadow of length 28.75 m under similar conditions will be

(A) 11 m

(B) 12.5 m

(C) 13.5 m

(D) 24.25 m

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