Question 102

Ravi can walk 3 $\frac{1}{3}$ km in one hour. How long will it take him to walk to his office which is 10 km from his home?

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Solution

Given Ravi can walk $3 \frac{1}{3} k m i n 1 h . ∴ R a v i^{'} s S p e e d = 3 \frac{1}{3} k m / h = \frac{(3 \times 3) + 1}{3}$
$= \frac{9 + 1}{3} = \frac{10}{3} k m / h$
$∵$ Distance between Ravi and his office = 10 km
$∴ t i m e = \frac{Distance between Ravi and his office}{Ravi Speed in 1 h} = \frac{10}{\frac{10}{3}} = \frac{10}{1} \times \frac{3}{10} = \frac{30}{10} = 3 h$
Hence Ravi reaches his office in 3 h

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Question 102 Ravi can walk 3 13 km in one hour. How long will it take him to walk to his office which is 10 km from his home?

Given Ravi can walk 313 km in 1h.∴Ravi′sSpeed=313km/h=(3×3)+13 =9+13=103km/h ∵ Distance between Ravi and his office = 10 km ∴time=Distance between Ravi and his officeRavi Speed in 1 h=10103=101×310=3010=3h Hence Ravi reaches his office in 3 h

Question 102

Ravi can walk 3 $\frac{1}{3}$ km in one hour. How long will it take him to walk to his office which is 10 km from his home?