Let the speed of the boat in still water and speed of stream be 'x' km/hr and 'y' km/hr respectively. Given, (x - y) = 4 km/hr ATQ, {280 ÷ (x + y) } + {200 ÷ (x - y) } = 70 Or, {280 ÷ (x + y) } + {200/4} = 70 Or, {280 ÷ (x + y) } + 50 = 70 Or, {280 ÷ (x + y) } = 70 - 50 Or, {280 ÷ (x + y) } = 20 So, (x + y) = 14 Therefore, downstream speed of the boat = (x + y) = 14 km/hr
25% of 30% of 3/5 of 14500 =?
[∛(91125/19683 )- ∛(3375/5832 ) ] × ∛(512/9261) = ? - √(484/3969)
(26)2 = {(20% of 40% of 18200) ÷ ?} × 1664 ÷ 128
‘A’ and ‘B’ invested Rs. 5000 and Rs. 4200, respectively in a business, together. After 7 months, ‘A’ withdrew 25% of his initial investment...
(292 – 141) ÷ 5 + (40 ÷ 2) + 23 = ?
36% of 75 + 46% of 50 = ?% of 200
{(? × 15) + (? × 45)} – 120 = 360
12% of 10% of 15% of 5000 + (12 x 15) = ?
(√1764 + ?) % of 120 = 25% of 320 - 8