Numerical Free Test 2 - Aptitude Test

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Q4Between 1990 and 2000, what was the increase in energy use for the PCRoom, Meeting Rooms and Office Space combined?(A) 50kWh(B) 184kWh(C) 188kWh(D) Cannot sayStep 1 - The graphs give percentages, with the total shown at the bottom. Don’t waste timeby working out the kWh value for each of the PC Room, the Meeting Rooms and the OfficeSpace. Use the percentages and add up at the end:In 1990: (12% + 12% + 41%) of 17,000kWh = 11,050kWhIn 2000: (21% + 14% + 39%) of 15,000kWh = 11,100kWh.Which is an increase of 50kWh.Thus the correct answer is (A) 50kWhCopyright AssessmentDay. Unauthorised copyingor distribution in printed, electronic, or any otherform in whole or in part, is prohibited withoutprior written permission from AssessmentDay.Page 4Document last updated 05-07-2012AssessmentDaywww.assessmentday.co.uk
Q5If the Building Energy Use today is 6% less than it was in 2000, by whatpercentage is today’s Building Energy Use lower than that of 1990?(A) 82.9%(B) 17.1%(C) 17.8%(D) Cannot sayStep 1 - Total energy usage in 2000 = 15,000kWh, so today’s at 6% less is 15,000 x 0.94 =14,100kWh. This compares with 1990 levels of 17,000kWh.Step 2 - To work out the reduction from 17,000 to 14,100, calculate (14,100 ÷ 17,000) =0.8294, which is a reduction of (1-0.8294 = 0.17059) 17.1%.Thus the correct answer is (B) 17.1%Copyright AssessmentDay. Unauthorised copyingor distribution in printed, electronic, or any otherform in whole or in part, is prohibited withoutprior written permission from AssessmentDay.Page 5Document last updated 05-07-2012AssessmentDaywww.assessmentday.co.uk
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Numerical Free Test 2 - Aptitude Test

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