The speed of a boat in still water is 7.5 times the speed of the stream. If the difference between the upstream and downstream speed of the boats is 40 km/hr, then find the time taken by the boat to travel 260 km in upstream.
Let the speed of the stream be ‘x’ km/hr Therefore, speed of the boat in still water = 7.5x km/hr Upstream speed of the boat = 7.5x – x = 6.5x km/hr Downstream speed of the boat = x + 7.5x = 8.5x km/hr According to the question, 8.5x – 6.5x = 40 => 2x = 40 => x = 20 Therefore, upstream speed of the boat = 6.5x = 130 km/hr Required time taken = 260/130 = 2 hours
In a certain code language, 'ike wsd qax' means 'pledge amount special', 'wsd nhd xcv' means 'pledge greet have' and 'bhg ike kgf, means 'prayer amount ...
In a certain code GONE is written as ‘5@&9’ and SEAL is written as ‘69%*’. How is LOGS written in that code?
What is the code of “Recommendation Ruled”?
Which of the following is coded as ‘cmk psk’?
What is the code for ‘hand’ in the given code language?
What will be the code for ‘Awaited’?
If * means +, @ means -, # means × and $ means ÷, then what is the value of
16 * 40 @ 56 $ 7 # 2.
If all the letters in the word 'COLLECTION' are arranged in English alphabetical order from left to right and then all the vowels are changed to the nex...
In a certain code language, ‘APPLY’ is coded as ‘ZTTPC’ and ‘MOUSE’ is coded as ‘QNTWD’. How will ‘LIGHTS’ be coded as in that langu...
What is the code for “revive tussle response”?
