TCS Company Numerical Ability Probability

A vender sells two articles at same price with one article at 25% profit and other at 20% loss, what is the profit/loss percent in the overall transaction.
option
a) 5% profit
b) 4.6% loss
c) 4.6% profit
d) 5% loss

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TCS Other Question

Some cards question. Probability of 1 ace which is red and one spade. Something like This. Do go thru the cards ques. The decks and everything. A and B finished a piece of work in 5 days. If A had worked at twice the speed and B at half the speed, they would have finished the work in four days. How many days would it have taken A to finish the work alone?