Question
The speed of the boat in still water is 10 km/hr and the
speed of the stream is 5 km/hr. A boat goes 75 km downstream with its usual speed but at the time of returning the speed of the boat in still water is doubled. Find the total time taken by boat to cover the whole distance.Solution
According to the question, Required time = 75/(10 + 5) + 75/(20 – 5) => 75/15 + 75/15 => 5 + 5 = 10 hours
A $ B means A X B, A & B means A - B, A % B means A ÷ B and A # B means A + B, then what is the value of 320 & 80 # 120 % 24 $ 50?
Statements:
V ≤ P < S = B; T < U ≤ I = B; N < J < T
Conclusions:
I. J > P
II. N < S
If x stands for ‘addition’, ÷ stands for ‘subtraction’, + stands for ‘multiplication’, and – stands for ‘division’, then 30 x 40 – ...
If ‘A’ means (÷), ‘B’ means (×), ‘C’ means (+), and ‘D’ means (-), then ____ is the value of the expression.
36 A 6 B 6 D 6 ...
In a certain code language, '+' represents '-', '-' represents 'x', 'x' represents '÷' and '÷' represents '+'. Find out the answer to the following qu...
If ‘P’ denotes ‘addition’, ‘Q’ denotes ‘multiplication’, ‘R’ denotes ‘subtraction’, ‘S’ denotes ‘division’, then what w...
If “+” means “minus”, “×” means “divided by”, “÷” means “plus”, and “-“ means then “multiplied by”
250 × 10 �...
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation:
76 *(5*8*4)*9*75
What is the code for ‘it’?
If '+' means 'subtraction', ' X ' means 'addition', '-' means 'division' and '÷' means 'multiplication', then what is the value of the following expres...
