2 numbers are in the ratio 3:5. If each number increases by 10 the new ratio will be 5:7. Find the original numbers

Naomi’s parents want to have 50,000, saved for her college education, if they invest 20000 today and earn 7% interest compound annually, about how long will it take them to save 50 thousand

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

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.