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85 + 25 - 56 = 54
85 * 25 = 2125
25% of £85 =25 /100 x85 =1/4 x85 =11.25 The ans. £11.25p
25 - 110 = -85
To achieve an 85% on a 25-question test, you need to answer at least 21 questions correctly (since 85% of 25 is 21.25). Therefore, you can miss a maximum of 4 questions (25 - 21 = 4) to still reach the 85% threshold.