Question
Average speed of ‘A’ during a 20-hour journey is 24
km/h. If he covered the first 320 km of his journey at a speed of 20 km/h, then find the speed at which ‘A’ travelled during the remaining journey.Solution
Total distance covered by ‘A’ = 20 × 24 = 480 km Time taken to cover 320 km = 320/20 = 16 hours Time taken to cover remaining distance = 20 – 16 = 4 hours So, required speed = {(480 – 320)/4} = 40 km/h
If in a certain code language ‘+’ represents ‘×’, ‘–’ represents ‘+’, ‘×’ represents ‘÷’ and ‘÷’ represents ‘–’....
A seller sold a vehicle for Rs. 81,000 with the loss of 10%. At what price be sold to earn 10% profit?
In a given code form:
P + Q means P - Q
P ÷ Q means P × Q
P × Q means P + Q
P - Q means P ÷ Q
What is the correct...
- If 'P' means 'division', 'Q' means 'subtraction', 'R' means 'addition', and 'S' means 'multiplication', then what is the value of the expression:
{... Monthly income of A is Rs. 6000 and he saves 25% of his monthly income. If monthly expenditure of A is decreased by 35% while his monthly savings is inc...
Which two signs need to be interchanged to make the following equation correct?
62 – 14 × 75 ÷ 15 + 50 = 82
If ‘#’ means ‘-’, ‘@’ means ‘+’, ‘$’ means ‘÷’ and ‘&’ means ‘×’, then what is the value of the following expression?<...
Select the correct combination of mathematical signs that can sequentially replace the sign * and make the equation correct.
3 * 12 * 4 * 5 * 4...
Which two numbers should be interchanged to make the given equation correct?
620 + 75 ÷ 8 × 35 – 44 × 5 + 15 = 583
Which among the given operators should replace the “%” (in the same order) in the given expression below:
7 % 12 % 7 % 38 % 47 % 8
