Question
A girl found the answer for the question “subtract the
sum 1/4 and 1/8 from unity and express the answer in decimals” as 1.5. The percentage of error in her answer was?Solution
Correct answer = 1 - (1/4+1/8) = 1 - ((2+1)/8) ⇒ 1 - 3/8 = 5/8 = 0.625 Difference in answer = 1.5 - 0.625 = 0.875 Required percentage = 0.875/0.625 × 100 = 140 %
More No. System Questions
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) = ?
...( 22.01% of 899.80 ) × 15.99 = ? 2 + 27.98 × 2400 ÷ 800
- 44.83% of 799.88 + (84.12 X 14.98 ÷ 62.87) = ?² + 55.65
157.78% of 4820 + 92.33% of 2840 = ? + 115.55% of 1980
(804/65) ÷ (11/798) × (129/131) = ?
(23.99)2 – (17.99)2 + (1378.88 + 44.88) ÷ ? = 607.998
25.04 × 22.03 + 383.92 ÷ ? + 23.78% of 1499.98 = 926.08
20.11% of 119.99 + √80.97 ÷ 3.02 = ?
15.98% of 2199.9 = √? + 17.02% of 1799.97
(14.66)2 + (343.84 ÷ 3.88 - 55.87) = ? + 91.23
