If seamstress is paid 7.85 per hour and works 18.75 hours in one week, how much is she paid in one week?

It going to be 147.1875 which close to $147.19 because you already knows how many hours seamstress works. So you need to know how much seamstress will get paid which is 7.85 per hours. It means that u need to know how much it paid for 18.75 hours. U have to multiply 7.85 and 18.75