There are four to every seven girls in an instructory biology course , if there are 385 students enrolled in the course, how many are boys?

This doesn’t make sense to me it’s supposed to be lcm ( least common multiple )

Kevin has just finished paying off his loan. he was assessed a service charge of $422. he paid off the principal and the interest by making weekly payments of $36.13 for four years. if the principal was $7,150, how much did kevin pay in finance charges, to the nearest dollar? a. $498 b. $365 c. $422 d. $787

Find percent notation for 0.008 0.008=