Question

What per cent is each of the following:
1) 0.5 of 5

2) 450grams of 2.75kg

3) 12minutes of 3 hours

Answer 1

1)
0.5/5×100 = 10%

2)
kg should be converted into g
2.75 = 2.75×1000 = 2750g
450/2750×100 = 16.3%

3)
hours should be converted into minutes
3 = 3×60 = 180
12/180×100 = 6.66%

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Answer 2

0.5/5 × 100 = 10%
450/2750 × 100 = 16.36% ( approx.)
12/180 × 100. = 6.67 % (approx.)