In an examination the average marks of Rohit is 63. If he got 20 more marks in science and 28 more marks in maths then his average would have been 69. Find the total number of subjects he studied?
Let total number of subjects be x. Then, => (63x + 28 + 20)/x = 69 => 63x + 28 + 20 = 69x => 6x = 48 => x = 8
72% of 486 – 64% of 261 = ?
(6.013 – 20.04) = ? + 9.98% of 5399.98
458.32 - 563.32 + 659.32 =?
193. 69 + 200.09 – 512.96 + 312.09 =?
?% of (√196) × 24 + 344 = 428
(1/8) × (256 × 2)/(8 × 4) + ?3 = 1730
22% of 400 + √ ? = 34% of 800 - 25% of 400
192.251 + 326.233 + 125.021 + 19.273 = ?