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Q.
If a student walks at the rate of 4 mts/min from his home, he is 4 minutes late for school, if he walks at the rate of 6 mts/min he reaches half an hour earlier. How far is his school from his home ?
A.
100 mts
B.
96 mts
C.
98 mts
D.
120 mts
View Answer
Correct choice: C
Explanation:
Let the distance between home and school is 'x'. Let actual time to reach be 't'. Thus, x/4 = t + 4 ---- (1) and x/6 = t - 30 -----(2) Solving equation (1) and (2) => x = 98 mts.
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