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Let the distance covered of x km by Ram Time taken is ‘t’ hours, then Distance covered by Ram = speed × time x = 40 × t ………………………(i) Distance covered by Rohan (520 - x )km by Rohan. Distance covered by Rohan = speed × time (520 – x) = 50 × (t – 4) ………………………(ii) Putting the value of ‘t’ in eq (ii) from eq (i) (520 – x) = 50 × (x/40 – 4) 520 - x = 5x/4 – 200 520 + 200 = 5x/4 + x 720 = 9x/4 x = 320 km
The efficiency of a woman is 33.33% less than that of a man, whose efficiency is three times that of a child. If 2 children, 3 women, and 4 men together...
The mean deviation of the data 3, 10, 10, 4, 7, 10, 5 is:
Select the correct set of symbols which will fit in the given equation.
5 0 3 5 = 20
Simplify: (2x)²-(2y)²-(4x)²
A ________________ typically connects personal computers within a very limited geographical area, usually within a single building.
Compute: 1112 ÷ 139 ̶ 5
Select the option that is related to the third number in the same way as the second number is related to the first number.
12 : 60 :: 16 : ?
(0.04)5× (0.2)4÷ (0.008)2= (0.2)?
The value of λ for which the 2 vectors 2i – j + 2k and 3i + λ j + k are perpendicular is