Question
A student's marks were wrongly entered as 65 instead of
45. Due to this, the average marks for the class increased by 1 /3 The number of students in the class isSolution
Actual mark of a student =45 but wrongly entered = 65 wrongly increased marks = 65-45 =20 so now - Let the number of students = x Increased average marks = 1/3 20/x =1/3 x=60
More Average Questions
2(3/4) of 2880 + 54% of 7520 - ? = 302
Find the value of the following expression:
372 ÷ 56 × 7 – 5 + 2
- What will come in place of (?), in the given expression.
(5³ + 3²) × 2 = ? (1225/25) - (192/96) + (50/5) = ?
What will come in the place of question mark (?) in the given expression?
(555 + 385 - 535) ÷ 15 X ? = 36 X 30
- What will come in place of (?), in the given expression.
75% of 640 – 20% of 150 = ? `(21 xx 51 + 54)/(9 xx 14 - 30 )` =?
95% of 830 - ? % of 2770 = 650
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