Question
A Motorboat takes 24 hours for travelling downstream
from a point A to point B and coming back to point C, which is 1/3rd of distance between A and B. if the speed of the stream is 15 km/hr and the speed of the Motorboat in still water is 30 km/hr, then find out the distance between B and C?Solution
Let the total distance AB be D km BC = 1/3rd of D Time taken to cover AB + Time taken to cover BC = 24 hours D/((30+15)) + D/(3(30-15)) = 24 D/45 + D/45 = 24 D = 540km ∴ Distance between A and B = 540 km And Distance Between C and B = 540 × 1/3 = 180km.
15(2/9) + 11(2/9) + 17(1/9) + 13(4/9) = ?
25% of 1000 + 10% of 150 – 22 × ? = 45
1885 ÷ 64.98 + 7.29 + ? = 69.09
‘A’ and ‘B’ invested Rs. 5000 and Rs. 4200, respectively in a business, together. After 7 months, ‘A’ withdrew 25% of his initial investment...
187 ÷ 5 ÷ 0.4 = ? – 24 × 2.4
What value should come in place of (?) question mark.
√2025 − √729 + (24 × 32) ÷ 6 = ?
What will come in the place of question mark (?) in the given expression?
(30% of 1200 + 50% of 3200) ÷ 98 = ?
(?) + (35)2 = (140)2 – (80)2 + 20% of 5480
7292/3 = ?
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