Question
In a 2 km race, 'X' allows 'Y' a lead of 400 metres, but
still beats him by 200 metres. If 'Y' finishes the race in 20 minutes, how much time does 'X' take to finish?Solution
ATQ,
Distance covered by 'Y' when 'X' covers 2000 m = 2000 - 400 - 200 = 1400 m
Ratio of speeds (X : Y) = 2000 : 1400 = 10 : 7
Time ratio = 7 : 10
Time taken by X = (20/10) Γ 7 = 14 minutes
If '-' means 'Γ·', '+' means ' X ', 'Γ·' means '-' and ' X ' means '+', then what is the value of the following expression?
540 - 18 + 2 X 56 ...
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
28 * 174 * 6 * 4 * 126 = 18
If '+' means 'divided by', '-' means 'add', ' X ' means 'minus' and 'Γ·' means 'multiplied by'. What will be the value of the following expression?
...Which among the given operators should replace the β%β (in the same order) in the given expression below:
6 % 11 % 6 % 37 % 30 % 7
After interchanging "Γ" and "Γ·", "7" and "4", which of the following equations becomes correct?
If '+' means 'x', '-' means 'Γ·', 'x' means '+' and 'Γ·' means '-', what will come in place of the question mark (?)?
12 + ? - 6 x 20 Γ· 5 = 55
If 14 (16) 8 and 28 (20) 5, then what is the value of A in 63 (A) 4?
Statements:
V β€ P < S = B; T < U β€ I = B; N < J < T
Conclusions:
I. J > P
II. N < S
Select the correct combination of mathematical signs that can sequentially replace the β*β signs and balance the given equation.
12 * 8 * 42 ...
If βPβ means (Γ·), βQβ means (Γ), βRβ means (+), and βSβ means (-), then what is the value of the expression: 840 P 14 R 32 Q 8 S 99 R ...