1.

To make a ratio of average score of Rishi to Kartik of 87.5%, how much more marks need to add in total score of Kartik?1). 45.62). 12.63). 634). 49

Answer»

Average of RISHI/Average of Kartik = 87.55 = 7/8

For the average of Rishi,

⇒ Total SCORE of Rishi = 87 + 82 + 72 + 90 + 89 = 420

⇒ Average marks of Rishi = 420/5 = 84%

From the ratio,

⇒ Average of Rishi/Average of Kartik = 7/8

⇒ (84 × 8)/7 = Average of Kartik

⇒ Average of Kartik = 96

For 96 average, Total score of kartik = 96 × 5 = 480

⇒ Current total score of Kartik = 90 + 89 + 82 + 80 + 76 = 417

∴ Difference in Total score = 480 – 417 = 63


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