Get Started with ixamBee
Start learning 50% faster. Sign in now
ATQ; Let the speed of the boat in still water and the speed of the stream be ‘x’ km/h and ‘y’ km/h, respectively. Downstream speed of the boat = (x + y) km/h Upstream speed of the boat = (x – y) km/h Downstream speed of the boat = (720/18) = 40 km/h
According to the given condition, (x + y) = 40 ------- (I) And, 40 = 1.6 × (x – y) Or, (x – y) = 40 / 1.6 = 25 -------- (II) By adding equation (I) and equation (II), we get x = 32.5 km/h Therefore, the speed of the boat in still water = 32.5 km/h
A number increases by 30 when 60% of it is added to itself. What is the final value after addition?
If 6 is to 216 as 2 is to:
The sum of three consecutive odd natural numbers each divisible by 3 is 81. Which number is the largest number among the three numbers?
Gaurav ate in a restaurant and got a membership discount of 30% on the original bill amount but he has to pay 9% as service tax and 8% service charge on...
The smallest natural number that must be added to 1212 to make it a perfect square is:
What is the smallest four-digit number that can be evenly divided by 20, 24, and 36?
A number leaves a remainder of 12 when divided by 19. What will be the remainder when three times that number is divided by 19?
Which of the following number is rational number?
(5.53 – 4.07) 2/(4.07 – 3.15)(3.15 – 5.53) + (4.07 – 5.53) 2/(3.15 – 5.53)(5.53 – 4.07) + (3.15 – 5.53) 2
