Question
The speed of boat in still water is 48 kmph. If it takes
5 hour to go upstream 40 kms, in what time approximately will it return same distance downstream?Solution
Distance = 40 km Time taken to go upstream = 5 hour ∴ Speed upstream = 40/5 = 8 km/hr ∴ Speed of the current = 48 – 8 = 40 km/hr ∴ Speed downstream = 48 + 40 = 88 km/hr ∴ Time taken to go downstream = 40/88 = 5/11 hr ⇒ 5/11 x 60 minutes = 27 minutes approx..
If 'A' means '×', 'B' means '÷', 'C' means '+', and 'D' means '-', then what will come in the place of '?' in the given expression?
180 A 5 ...
157 + 256 – 88 ÷ 8 × 4 = 117
- Which two signs should be interchanged to correct the given equation?
16 – 8 ÷ 4 + 5 × 2 = 8 If '-' means 'division', '÷' means 'addition', '+' means 'multiplication' and ' X ' means 'subtraction', then what is the value of the following expres...
- Which two signs should be interchanged to correct the given equation?
5 + 3 × 8 – 12 ÷ 4 = 3 Himani goes 9m north and turns left and walks 6m. Again, she turns to her right and walks 5m. After this, she takes another right turn and walks 8m. So,...
If in a certain code language ‘+’ represents ‘×’, ‘–’ represents ‘+’, ‘×’ represents ‘÷’ and ‘÷’ represents ‘–’....
In a certain code language, '+' represents '-', '-' represents 'x', 'x' represents '÷' and '÷' represents '+'. Find out the answer to the following qu...
By interchanging which two signs the question will be correct?
15 + 5 ÷ 2 – 9 × 3 = 22
Read the directions carefully and answer the following questions.
If ' + ' means '-', ' × ' means '+', ' - ' means '÷', and ' ÷ ' means '×'...
Relevant for Exams:
