Question
A man can row upstream at 18 km/hr and downstream at 24
km/hr. Find the man’s rate in still water and the rate of the current.Solution
Upstream = 18 km/hr Downstream = 24 km/hr Man’s rate in still water = 1/2 × (24 + 18 ) = 21 km/hr Rate of the current = 1/2 × (24 - 18) = 3 km/hr
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 '×'...
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