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

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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

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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

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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

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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

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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.

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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

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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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