TCS Company Numerical Ability Time and Work

problems on trains

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TCS Other Question

When Usha was thrice as old as Misha, her sister Asha was 25. When Misha was half as old as Asha, then her sister Usha was 34. Their ages add to 100. How old is Usha?

a) 37 b) 43 c) 40 d) 44
What is the value of (2^2 + 4^2 + 6^2 + ... + 20^2 )?
A) 542 B) 756 C) 1540 D) 968