What is this expression in simplified form? (8/10)(8/5)

OA 64/50
OB. 16/50
OC. 80/2
OD. 320/2

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?

Scarlett stopped at a campground along the appalachian trail. the campground had a 12 acre area for tents, divided into 6 equal campsites. scarlett picked one of the sections to pitch her tent. which expression would give you the size of scarlett’s campsite? (more than one answer

Write the ratio as a fraction in lowest terms. compare in inches. 5 feet to 50 inches