I need an answer ASAP

Do 12/14 and 8/10 have the same value? explain your answer.

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.