one forth of the total distance is covered by 100km/hr, half of the distance covered by 60km/hr and latter travels at a speed of 100km/hr. what is the total distance in 10 hours
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Answer:
750 km
Step-by-step explanation:
d = st (distance = speed × time) ⇒ t = d ÷ s
~~~~~~~~~~~
1 - - =
( d ) ÷ 100 + ( d ) ÷ 60 + ( d ) ÷ 100 = 10
d + d + d = 10 .... (1)
(1) × 10
+ = 100 ⇔ + = 100 ⇔ = 100 ⇔ = 100
d = = 750 km
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