in the spelling competition consisting of 3 rounds, positive points are given for every correct spelling while negative points are given for every incorrect spelling. The table below shows Harry's scores in the competition.
Round Score
Round 1 9
Round 2 ?
Round 3 −7
Final score 19
Find Harry's score in Round 2.
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Answer:
let Harry's score in round two be 'x'
equation formed by given circumstances
= 9 + (-7) + x = 19
= x = 19 - 9 - 7 ( after rearranging )
= x = 10 - 7
= x = 3
therefore Harry's score in round two is 3
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