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:
Good