Question
A cyclist maintained an average speed of 22 km/hr for the
first 18 hours of a race. In the next 6 hours, his average speed was βxβ km/hr, so that his overall average speed became 25 km/hr. Find the value of 'x'.Solution
ATQ,
{22 Γ 18 + 6 Γ x}/(18 + 6) = 25
Or, 6x + 396 = 25 Γ 24 = 600
Or, 6x = 204
Or, x = 34
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