C FiddesPoints Game: Percentages1.GOOD NEWS! Accidents in
British homes involving tea-cosies went down from three in1993 to
nil in 1994.What percentage decrease was that?
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2.Matt black paint absorbs 97% of light, the remainder being
reflected. Scientistshave developed a new superblack coating, 10
times blacker than matt black paint,meaning that it reflects of the
light reflected by matt black paint.What percentage of light does
the new coating absorb?Attempt 1
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3.A 30 cm 40 cm page of a book includes a 2 cm margin on each
side, as shown.What percentage of the page is occupied by the
margins?
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4.48% of the pupils at a certain school are girls. 25% of the
girls and 50% of the boys at this school travel to school by
bus.What percentage of the whole school travel by bus?
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5.Our ancient Ancient History teacher's copy of Homer's Odyssey
cost 40p in 1974. A similar edition today costs 5.What percentage
increase is this? Attempt 1
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6.80% of the pupils asked preferred purple blazers, so purple
blazers it is!, announced the Head triumphantly conveniently
forgetting to mention that 80% of pupils of the school had not even
been asked.What percentage of pupils had actually told the Head
that they preferred purple?
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7. 6% of 6 plus 8% of 8 equals
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8.Mary's height increased by 30% between her 5th birthday and
her 10th birthday. Itincreased by 20% between her 10th birthday and
her 15th birthday.By how much did her height increase between her
5th birthday and her 15th birthday?
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9.20% off everything, screamed the sale posters. I paid 60. What
would I have paidbefore the sale?
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10.A bottle contains 750ml of mineral water. Rachel drinks 50%
more than Ross, and these two friends finish the bottle between
them.How much does Rachel drink?
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1100%299.7322%438%51150%616%720%81.98956%10450 ml
