Question
The speed of a boat is that of the current of water is
32:5. The boat goes along with the current in 3 hours 10 minutes. It will come back inSolution
Let the speed of the boat in still water = 32 km/hr And the speed of the current = 5 km/hr Time = 3 hours 10 minutes = 19/6 hrs Downstream speed = 32 + 5 = 37 km/hr Upstream speed = 32 – 5 = 27 km/hr Distance = Downstream speed × Downstream time Distance = [37 × (19/6)] km Upstream time = Distance / Upstream speed Upstream time = [37 × (19/6)]/27 = `4(1/3)` hrs
If '%' means (+), '#' means ( - ), '@' means ( X ), and '&' means (÷), then what is the value of the expression:
80 % 110 & 5 @ 9 # 104
Select the correct combination of mathematical signs that can sequentially replace the * signs and make the equation correct.
45 $ 5 $ 68 $ 17$ 12 = 37
Which two signs should be interchanged in the following equation to make it correct:
490 ÷ 70 + 5 × 28 – 15 = 48
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
425 * 250 * 200 * ...
If ‘–‘ means ‘addition’, ‘+’ means ‘subtraction’, ‘÷ ‘ means ‘multiplicat...
If A # B means A + B, A $ B means A - B, A % B means A X B and A & B means A ÷ B, then what is the value of '154 & 22 % 5 $ 68 # 84'?
Which two signs should be interchanged to make the below equation mathematically correct?
9 ÷ 3 + 6 – 6 × 2 = 30
In a certain code language, '+' represents ' X ', ' - ' represents '+', '÷' represents '-' and ' X ' represents '÷'. Find out the answer to the follow...
If “+” means “minus”, “×” means “divided by”, “÷” means “plus”, and “-“ means then “multiplied by”
210 × 7 –...
If in a certain code language ‘+’ represents ‘×’, ‘–’ represents ‘+’, ‘×’ represents ‘÷’ and ‘÷’ represents ‘–’....
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