Let the speed of boat in still water =B and speed of stream =S Speed of boat in upstream =B-S=13×60/52 =15km/h S=6km/h B=21km/h Speed of boat in downstream =B+S=27km/h Take time cover 40km in downstream =40/27 hr.
32% of 4080 + 24% of 540 = ? % of 3200
What will come in the place of question mark (?) in the given expression?
(18 × 8 ÷ 12) × 10 = ?
6% of 520 + 5% of 620 = ?
5/13 × 104 + 1(2/9) × 198 = 133 + ?
18, 25, 33, 42, 52, 63, ?
5/2 of 5/6 of 12/5 of 54 % of 5250 = ?
26% of 650 + 15% of 660 – 26% of 450 = ?
245 + (45 ÷ 3 + 5) × 6 - 125 = ?
721 +21 x 9 - 118 = ? + 82
(360 - ?)/(25% of 96) = 13
