A laborer of an industry uses bus or train to reach the industry. The ratio of using bus and train is 3:7. The probability that the laborer
reaches to the industry late is 0.25 if he uses bus and the same
probability if he uses train is 0.05. One day he reaches to the
industry late. Find the probability that he uses train or bus.

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  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or  

answer: 5100 just subtract

step-by-step explanation:

26 is 33.33% of 78

step-by-step explanation:

26 is what percent of 78?

26 is p% of 78

equation: y = p% * x

solving our equation for p

p% = y/x

p% = 26/78

p = 0.3333

convert decimal to percent:

p% = 0.3333 * 100 = 33.33%