A) 224
B) 230
C) 234
D) 220
Correct Answer: A
Solution :
[a] Distance = Average speed \[\times \] time \[=\frac{2\times 21\times 24}{21+24}\times 10\] \[=\frac{2\times 21\times 24}{45}\times 10=224\,km\]
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