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He scored 20% less than Ahmad
100% - 20% = 80%
That means he scored 80% of Ahmad's score
Take 85 x 0.8 (or 80/100)
Ans shd be 68
100% - 20% = 80%
That means he scored 80% of Ahmad's score
Take 85 x 0.8 (or 80/100)
Ans shd be 68
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