Question
The speed of a boat in still water is 32km/hr and the
speed of the current is 8km/hr. It takes a total of 15hours to row to upstream from Point A to B and downstream from Point B to C. If the distance between A to C is two-fifth the distance between B and C then what is the distance between B and C? (Where BC < AB)Solution
Let the distance from B to C be xkm ∴ A to C = 2x/5 km Upstream speed = 32 – 8 = 24 km/hr Downstream speed = 32 + 8 = 40km/hr Now, 2x/(5 × 24) + x/40 = 15 2x/120 + x/40 = 15 (2x + 3x)/120 = 15 x = 360 km
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:
