Question
There is a fraction such that if we add 11/30 to it then
it gets inverse & if we subtract 1 from numerator then the fraction becomes 2/3 . What is the fraction?Solution
Let the fraction = a/b According to the 1st condition; (a/b)+(11/30) = b/a . ....(1) According to the 2nd condition; (a-1)/b = 2/3 => 3a - 3 = 2b =>3a – 2b = 3 .. (2) By solving equation 1, => 30a2+11ab-30b2 = 0 => (6a-5b)(5a+6b)=0 we get the value of a/b = 5/6,-6/5 applying condition(2), a/b = (5-1)/6 = 4/6 = 2/3 Hence the required fraction = a/b = 5/6
(78.03 + 116.98) ÷ 13.211 = 89.9 – 25.23% of ?
- 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.)
? = 49.83% of 39.72% of (45.011.99 – 4.98 2.04)
(8000)1/3 × 10.11 × 8.97 ÷ 18.32 = ? + 25.022
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.)...
(17.17 × 21.98) + 34.15% of 649.99 = ? + 125.34
Which of the following options is the closest approximate value which will come in place of question mark (?) in the following equation?
26.52 ×...
7952.64 - 5236.19 + 6892.57 + ? = 16100.84
(12.13) 2 - 19.93 + 39.78 - 42.93 = ?
45.45 × 11.67 + 14399.88 ÷ 8.01 + 124.79 = ?
