Question
The average marks scored by boys and girls in a class
are 48 and 32, respectively. The total marks obtained by the entire class is 1680, with 40 students in total. How many boys are there in the class?Solution
Average marks of all the students = 1680/40 = 42 Applying Alligation we get 
Number of boys in the class = 5/8 × 40 = 25
More No. System Questions
49.99% of 5400 + 923=?
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
`sqrt(224.991)` + (3.81008)2 = ? `-:` `1/6.0001`
` `
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
1219.98 ÷ 30.48 × 15.12 = ? × 2.16
(24.98)2 = ?2 + (14.99)2
What will come in the place of question mark (?) in the given expression?
?2 = {40% of (552 – 352 )} – 44
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