A gymnastics meet had 64 fans. If student tickets cost $3 and adult tickets cost $5, how many of each ticket were sold if the meet brought in $272 from ticket sales. Need an equation with answer PLZZ NEED HELP ASAP!!!

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample