Question

INTERMEDIATE LEVEL
9. For each of the following, express the first quantity
as a percentage of the second quantity.
(a) 25 seconds, 3.5 minutes
(b) 45 minutes, 1 hour
(C) 1 vear, 4 months
(d) 15 mm, 1 m
(e) 335 cm, 5 m
(f 1 kg, 800 g
(g) 60°, 360°
(h) 63 cents, $2.10
10. Find the value of each of the following.
(a) 65% of 1.35 ml (b) 56-% of 810 m
(C) 0.56% of 15 000 1 (d) 2000% of 5€
11. The maximum number of marks attainable at a
Mathematics competition is 60. Kate obtains
40 marks, Priya obtains 46 marks and Nora
obtains 49 marks. The examination board decides
that those who score 80% and above will get a
gold award, those who score 70% to 79% inclusive
will get a silver award and those who score 60% to
69% inclusive will get a bronze award. Determine
the type of award each girl gets.
12. A company had 12 000 employees. During the
financial crisis in 2008, 2.5% of them were
retrenched, 50.75% of them had a pay cut and
the rest were unaffected. Find the number of
employees who were unaffected by the
financial crisis.
13. Ethan's monthly salary is $1850. In a particular month,
he spent 20.5% of his salary on room rental, $690
on food and $940 on other expenses. Express the
amount that he overspent as a percentage of his
monthly salary, giving your answer correct to
2 decimal places
14. There are 600 pages in a novel. Rui Feng reads
150 pages of the novel on Friday and 40% of the
remaining pages on Sunday. Express the number
of pages that remains to be read as a percentage of
the total number of pages in the novel.​

Answer 1

Answer:

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Step-by-step explanation: