New Learning Composite Mathematics Class 7 SK Gupta Anubhuti Gangal Percentage and Its Applications Chapter 8B Solution

New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8B Solution

Find.

(1) (a) 25% of 32

(b) 16-1/3% of 390

(c) 50% of 29

(d) 33-1/3% of 150

(e) 20% of 775

(f) 15% of 3000

(g) 28% of 1225

(h) 18% of 2650

(2) (a) 10% of Rs. 775

(b) 15% of 800 kg

(c) 45% of 180 L

(d) 37% of Rs. 680

(e) 120% of Rs. 65

(f) 16-2/3% of 480 m

(g) 36% of 1.5 km = ____ m

(h) 27-1/2% of 8 m = ____ cm

(i) 66-2/3% of 2 days = ____ h.

Solution:

(3) A certain can of ice tea contains 4% of the recommended daily allowance of sodium. The recommended daily allowance is 2500 miligrams. How many miligrams of sodium are in the can of iced tea?

(4) 27% of a fertiliser is superphosphate. How much superphosphate (in kg) is in 2 tonnes of the mixture?

(5) In a referendum, 68% of the 85,800 voters voted YES and the rest voted No. How many voted NO?

Solution:


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