Question

plz tell me fast.
the answer of the page
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Answer 1

Answer:

Option A is the correct answer of this question.

Answer 2

Step-by-step explanation:

T1 = D1/S1

T1 = D1/S1 1/60

T1 = D1/S1 1/60T2 = D2/S2

T1 = D1/S1 1/60T2 = D2/S2 1/40

T1 = D1/S1 1/60T2 = D2/S2 1/40Avg speed = T1 + T2/ T1 + T2

T1 = D1/S1 1/60T2 = D2/S2 1/40Avg speed = T1 + T2/ T1 + T2 = 1+1/ 1/60 +1/40

=2/2+3/120

= 2*120/5

=48 km hr