Mathematics
The speed of a boat downstream is 20 km/hr and upstream is 16 km/hr. Assertion (A) : The speed of the boat in still water = km/hr. Reason (R) : If the speed of boat in still water is x km/hr and the speed of stream is y km/hr, the speed downstream = (x + y) km/hr and speed upstream = (x - y) km/hr. 1. A is true, R is false. 2. A is false, R is true. 3. Both A and R are true and R is the correct reason for R. 4. Both A and R are true and R is the incorrect reason for R.
Related Questions
One pipe can fill an empty cistern in 3 hrs less than the another pipe. When both the pipes are opened together, the empty cistern is filled in 2 hrs. The second pipe will fill the empty cistern in :
3 hrs
6 hrs
1 hr
5 hrs
The sum of the ages of Rohan and his father is 35 years, whereas the product of their ages is 150.
Assertion (A) : Rohan's age is 5 years.
Reason (R) : If Rohan's age is x years then x(35 - x) = 150
option
A is true, R is false.
A is false, R is true.
Both A and R are true and R is correct reason for R.
Both A and R are true and R is incorrect reason for R.
Two consecutive natural numbers each of which is multiple of 3 and with their product = 108.
Statement 1: The required natural numbers are 9 and 12.
Statement 2: If two natural numbers are 3x and 3x + 3; 3x(3x + 3) = 108.
Both the statement are true.
Both the statement are false.
Statement 1 is true, and statement 2 is false.
Statement 1 is false, and statement 2 is true.
The selling price of an article is ₹24. If cost price is ₹x and loss is x%.
Statement 1: x - x% of ₹24
Statement 2: x - x% of x = ₹24
Both the statement are true.
Both the statement are false.
Statement 1 is true, and statement 2 is false.
Statement 1 is false, and statement 2 is true.