Chain Rule

Chain Rule Worksheet-1

1. 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.

2. If the price of 6 toys is Rs. 264.37, what will be the approximate price of 5 toys?

(a) Rs. 140         (b) Rs. 100        (c) Rs. 200        (d) Rs. 220

(e) Rs. 240

Chain Rule Worksheet-2

1. A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs. When the smaller wheel has made 21 revolutions, then the number of revolutions made by the larger wheel is:

(a) 4                    (b) 9                    (c) 12                  (d) 49

2. In a camp, there is a meal for 120 men or 200 children. If 150 children have taken the meal, how many men will be catered to with the remaining meal?

(a) 20                 (b) 30                 (c) 40                  (d) 50

Chain Rule Worksheet-3

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

(a) 350               (b) 400               (c) 425                (d) 450

2. A certain number of persons can dig a trench 100 m long, 50 m broad and 10 m deep in 10 days. The same number of persons can dig another trench 20 m broad and 15 m deep in 30 days. The length of the second trench is:

(a) 400 m          (b) 500 m          (c) 800 m          (d) 900 m