I used a calculator and have solved it without. I didn't get any of these answers. HELP

Diana is painting statues. she has 7/8 of a liter of paint remaining. each statue requires 1/20 of a liter of paint.how many statues can she paint? yeah dad i added the cup to the door now will you stop emailing me while im doing my homework.(lmbo xd i just realized this wooow)

Me what is the value of x? showing work would be appreciated - ! : )

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?