Question
The average mark obtained by 110 candidates in a certain
examination is 45. If the average marks of passed candidates are 50 and that of the failed candidates is 25, then what is the number of candidates who passed in the examination?Solution
According to question, => 50 × x + 25 × (110 − x) = 110 × 45 => 50x + 2750 – 25x = 4950 => x = 88
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exactvalue.)
20% of 80 × 26% of 65 = ?
(20.98 ÷ 2.91) + (15.12 – 5.96) = ?
( 19.95% of 799.89 ) × 12.05 = ? 2 + 18.99 × 6250 ÷ 1250
35.05% of 14.87 × (13.02 – ?) + 30.19 = 188.7
28 men and 21 women can complete a work in 16 days. All of them start working together and after working for 12 days the women stopped working. All men ...
Find the approximate value of Question mark(?). No need to find the exact value.
59.88% of 419.78 + (24.09 × 5) ÷ 3 – √(80.81) = ?
...(`sqrt(224.95)` `xx` `sqrt(440.89)` ) + (`sqrt(783.82)` `xx` `sqrt(440.87)` ) = ? + 150.03% of 120.33 - 139.86% of 1249.88
...1587.9 + 9650.98 + 10612.8 =?3 - 2536.67
(7008.79)2/7009.201 × √1442.76 × 0.4897 =?
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