Transform the formula for the given variable: i=prt solve for t

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?