Question
The speed of a boat is that of the current of water is
30:7. The boat goes along with the current in 4 hours 12 minutes. It will come back inSolution
Let the speed of the boat in still water = 30 km/hr And the speed of the current = 7 km/hr Time = 4 hours 12 minutes = 21/5 hrs Downstream speed = 30 + 7 = 37 km/hr Upstream speed = 30 – 7 = 23 km/hr Distance = Downstream speed × Downstream time Distance = [37 × (21/5)] km Upstream time = Distance / Upstream speed Upstream time = [37 × (21/5)]/23 = `6(3/4)` hrs
If 98 # 86 = 120 and 59 # 95 = 90, then 79 # 98 = ?
‘105' is related to '15' following a certain logic. Following the same logic, '623' is related to '89'. To which of the following is '784’ related, ...
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Some equations are solved based on a certain system. On the same basis find out the correct answer for the unsolved equation. Â
8 – 4 – 2�...
Given set: Â [20, 82, 31]
In a code language, ‘exercise class school’ is coded as ‘184’. ‘fees teacher school’ is coded as ‘430’ and ‘fees exercise student’ i...
Select the option that is related to the third number in the same way as the second number is related to the first number.
14 : 210 : : 18 :?
Burma : Kyat:: Israel: ?
Select the option in which the numbers are related in the same way as the numbers of the following set:
(5, 500, 10)
If 68 # 34 = 238 and 39 # 204 = 243, then 45 # 20 = ?
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