elitmus Maths Puzzle Numerical Ability

. two train start from two station in opposite direction.the distance between two station is 27 km.The speed of train is 5km/h and 7km/h respectively..so when will they meet at mid point second time..

a)40.5 hr b) 13.5 hr c)10.5 hr d) none of these

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elitmus Other Question
what is the maximum remainder when xxyyzz is divided by 1001???
1. 990
2. 121
3. 897
4.? .a person sells his goods in diffent way...

i) sells 20% profit on cost price
ii)use 800g in place of 1kg and sells at cost price
iii)mix 200 g impurities and sells at cost price
iv)use 900 g in place of 1kg and sells at 10% more of cost price....
after 4 months they arrange there profit in increasing order so answer will be
a)iii