Question
A motorboat in still water travels at a speed of 39
km/hr. It goes 35 km upstream in 1 hour 15 minutes. The time taken by it to cover the same distance down the stream will be :Solution
Speed of the motorboat upstream = 35/(5/4) = 28 km/hr Let the speed of the current be x km/hr ⇒ 39 – x = 28 ⇒ x = 11 km/hr Speed of motor boat downstream = 39 + 11 = 50 km/hr Time taken to cover 35 km at 50 km/hr = 35/50 = 7/10 hours or 42 minutes
Six students are sitting around a circular table facing the centre. Puneet is sitting between Iqbal and Aman. Joya is sitting at the second place to the...
statement : Q > R ≥ S = V = Y > H < N
conclusion :
I. Q < S
II. Y < R
54 : 3 :: ? : 4 :: 500 : 5
In a certain code language, 'LAST' is coded as 'PFWY'. What is the code for 'MEAN' in that code language?Â
Which of the following numbers will replace the question mark (?) in the given series?
4, 11, 19, 31, 52, 89, ?
Select the figure that will come next in the following figure series.
Thickness of 8 tyres L, M, N, O, P, Q, R and S is compared. Thickness of no two tyres is same.Thickness of N is more than L but less than 6 tyres. Thick...
After interchanging which two numbers, the value of the given equation will be ' 33 '?
8 ÷ 2 – 5 – 6 × 7
...Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
17 * 4 * 6 * 2 * 4 = 9
In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the set in which th...
