Question
The scores achieved by P and Q in an examination are in
a ratio of 9:4 respectively. If Q scores an additional 11 points, then P's score will be approximately 25% higher than Q's score. What is the difference between the actual scores of P and Q?Solution
Let the scores of P and Q be 9x and 4x respectively, based on the ratio 9:4. When Q scores an additional 11 points, his new score is 4x+11. It is given that P's score is 25% higher than Q's new score: 9x=1.25×(4x+11) Solving the equation: 9x=5x+13.75 4x=13.75 x=3.4375 Calculate the actual scores: P =9x = 9×3.4375=30.9375 Q=4x=4×3.4375=13.75 The difference between their scores: 30.9375−13.75=17.1875 So, the difference between the actual scores of P and Q is approximately 17.188
- 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 replace the question mark (?) in the following?
? =...
- 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.)...
14.96% of 120.03 - 107.99 + 88.93% of 199.87 = ?
16.98 × 88.05 + 1999.996% of 299.08 + 5.005 % of 4999.997 = ? × 20.98 × 40.009
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.)...
?% of (150.31 ÷ 14.97 × 50.011) = 319.98
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.)...
(363.89% of 224.98 – 319.86% of 134.94) ÷ ? = √(134.88 ÷ 15.25)
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