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ATQ;
Downstream speed = 160 ÷ 8 = 20 km/h
Let boat speed in still water = b, stream speed = s
Downstream = b + s = 20
Upstream = b – s
Difference between downstream and upstream = (b + s) – (b – s) = 2s = 2
Hence s = 1
Then b = 20 – s = 19
Required ratio = 19 : 1 = 19 : 1
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Which two signs should be interchanged to make the following equation correct?
38 ÷ 26 – 2 + 5 × 4 = 45
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
128 * 4 * 12 * 3 * 8 = 20
What will be the value of expression if the numbers/digits ‘(42)’ and ‘(16)’ are interchanged?
16 - 32 ÷ 8 × 12 + 11 + 42
...Which two signs should we interchange inorder to make the given equation true?
36 × 5 - 84 ÷ 4 + 50 = 151
After interchanging the given two signs, what will be the value of the given equation?
Sign: + and ÷
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