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Start learning 50% faster. Sign in nowLet the speeds of boats ‘A’ and ‘B’ in still water be 8x km/hr and 9x km/hr Therefore, speed of the current = 0.25 × 8x = 2x km/hr According to the question, 8x + 2x = 680/8.5 Or, 10x = 80 Or, x = 8 Therefore, upstream speed of boat ‘B’ = 9x – 2x = 7x = 56 km/hr Downstream speed of boat ‘B’ = 9x + 2x = 11x = 88 km/hr Required time taken = (84/56) + (220/88) = 1.5 + 2.5 = 4 hours
Seven persons G, H, I, J, K, L, and M have different heights. H is taller than J. H is taller than G, who is just shorter than J. L is shorter than M. O...
Select the letter cluster from among the given options that can replace the question mark (?) in the following series.
IDF, NIK, ?, UPR, WRT, XSU
Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is relate...
In a certain language, ‘SAME’ is written as ‘UCOG’ and ‘MANY’ is written as ‘OCPA’. How will ‘COME’ be written in that language?
...If in the number '7243564', 1 is subtracted from all the odd digits and 2 is added to all the even digits then all the numbers which are not repeated mo...
"Botany" is related to "Study of Plants" in the same way as "Ornithology" is related to "____".
In the question below some statements are given followed by three conclusions I, II and III. You have to take the given statements to be true even if t...
Which of the following interchange of signs would make the given equation correct?
42 ÷ 7 − 64 + 11 × 6 = 4
Statements: G > H ≥ I = J; C < I ≥ L = K
Conclusions:
I. K < G
II. C > J
Pointing to Akshat, Raghu said, ‘I am the only son of one of the sons of his father.’ How is Akshat related to Raghu?