It takes one student 8 hours to wash all of the cars at a school car wash. If 6
students wash all the cars, how many hours will each person spend washing
cars? (Assume that all students wash cars at the same rate.)

A. 0.75 hours
B. 48 hours
C. 1.3 hours
D. 4 hours
Please help me!

I’m confused on how to work the pie charts

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.

Harry owes the bank money. to repay his debt, he paid $150 back to the bank each month. after 10 months, his remaining debt was $6900. what was the original amount of harry's debt? how long did it take harry to pay back his entire debt?