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Two stations P and Q are 110 km apart on a straight track. One train starts from P at 7 a.m. and travels towards Q at 20 kmph. Another train starts from Q at 8 a.m. and travels towards P at a speed of 25 kmph. At what time will they meet?

A10 am

B10.30 am

C11 am

D11.20 am

Answer:

A. 10 am

Read Explanation:

P - Q ഇടയിലുള്ള ദൂരം 110 കിലോമീറ്റർ

ആദ്യ ട്രെയിൻ ഒരു മണിക്കൂറിൽ 20 കിലോമീറ്റർ സഞ്ചരിച്ചാൽ രണ്ട് ട്രെയിൻ തമ്മിലുള്ള തമ്മിലുള്ള ദൂരം 90 കിലോമീറ്റർ ആയിരിക്കും

പിന്നീടുള്ള യാത്രക്ക് രണ്ട് ട്രെയിനും t സമയം എടുത്താൽ 20×t+25×t=9020 \times t+25 \times t = 90

45×t45 \times t= 90 

t = 2 

രണ്ട് മണിക്കൂറുകൾക്ക് ശേഷം ട്രെയിനുകൾ കണ്ട്മുട്ടും 

8 +2 = 10 മണി 


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