Question
Ratio of speed of boat in downstream and speed of stream
is 7:3, if speed of current is 9 km/hr, then find distance travelled (in km) upstream in 6 hours.Solution
Given ratio: Downstream speed : Stream speed = 7:3 Stream speed = 9 km/hr Find downstream speed: Let Downstream speed = 7x and Stream speed = 3x Since 3x = 9 → x = 3 So, Downstream speed = 7×3=21 km/hr Find boat’s actual speed: Boat speed in still water = Downstream speed - Stream speed = 21 - 9 = 12 km/hr Find upstream speed: Upstream speed = Boat speed - Stream speed = 12 - 9 = 3 km/hr Find distance traveled upstream in 6 hours: Distance = Speed × Time = 3 × 6 = 18 km
Read the directions carefully and answer the following question.
If in the number ‘ 9887532691 ’, the even digits are shifted to the next d...
Select the options in which the numbers are related in the same way as are the numbers of the following set.
(541, 14, 737)
- This question is based on the five, three-digit numbers given below.
(Left) 847 538 628 482 497 (Right)
(Example- 847 – First digit = 8, ... How many pair of digits in forward and backward direction are there in the number “9257364” that has as many numbers between them as in the ...
If each of the letters in the English alphabet is assigned odd numerical value beginning A = 1, B = 3 and so on, what will be the total value of the let...
A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
13, 38, 150, _____, 4478, 31341.
Select the number-pair in which the two numbers are related in the same way as are the two numbers of the following number-pair.
7 : 85
If 2 is subtracted from the second digits of each of the numbers, how many numbers thus formed will be divisible by three?
Two bus tickets from city A to B and three tickets from city A to C cost ₹ 77 but three tickets from city A to B and two tickets from city A to C cost...
Relevant for Exams:
