Amy can clean the house in 6 hours. when she works together with tom, the job takes 4 hours. how long would it take tom, working by himself, to clean the house?

Aparking lot is to be 400 feet wide and 370 feet deep. how many standard-sized cars fit in this lot considering a double-loaded (w4) two way traffic set up, an angle of 90° and a sw of 9’ 0’’? (do not consider handicapped parking spaces, and consider 15’ for turning aisles). show your work.

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

Can someone check if i did this correct. it’s number 4 if you’re wondering.