Question
If, 40 – 14 means 560, 168 + 8 means
21, 26 ÷ 2 means 28, 8 x 7 means 1, then 410 – 7 x 290 ÷ 350 + 7 x 21 = ?Solution
Given that: 40 – 14 = 560. But actually 40 x 14 = 560. So, – means x. Given that: 168 + 8 = 21. But actually 168 ÷ 8 = 21. So, + means ÷. Given that: 26 ÷ 2 = 28. But actually 26 + 2 = 28. So, ÷ means +. Given that: 8 x 7 = 1. But actually 8 – 7 = 1. So, x means –. Given expression =410 – 7 x 290 ÷ 350 + 7 x 21 =? 410 x 7 – 290 + 350 ÷ 7 – 21 =? 2870 – 290 + 50 – 21 2609
- A boat takes a total of 6 hours to travel 45 km downstream and 30 km upstream. In another scenario, the same boat takes 8 hours to cover 60 km upstream and...
Speed of a boat in still water is 20 km/h while the speed of stream is ____ km/h. Total time taken by the boat to go 200 km upstream and 300 km downstre...
A boat takes 2 hours to cover 60 km downstream. If the speed of the stream is 3 km/h, then how far will it go upstream in 6 hours?
The speed of a boat in still water is 7.5 times the speed of the stream. If the difference between the upstream and downstream speed of the boats is 40 ...
The speed of the stream is 11 km/h. Boat ‘A’ covers 84 km distance against the stream in 6 hours and boat ‘B’ covers 90 km distance against the ...
The ratio of the speed of boat ‘A’ in still water, the speed of boat ‘B’ in still water and the speed of the current is 8:6:2, respectively. If ...
The ratio of speed of boat in upstream and in Stillwater is 1: 3 respectively. The boat takes a total of 10 hours to travel 300 kilometer in downstream ...
Two boats A and B start towards each other from two places, 600 km apart. Speed of the boat A and B in still water are 23 km/h and 17 km/h respectively....
A boat takes 12 hours longer to cover 378 km upstream than it does to cover the same distance downstream. The speed of the stream...
The water in a river flow at the rate of 4 km per hour if the width and depth of the river are 8 M and 4 m respectively then how much water will enter ...
Relevant for Exams:
