Pump A delivers water at a rate 4 times that of pump B. If both pumps operate together, a tank with a capacity of 15000L can be filled in 20 minutes. Find the pumping rate of pump A in litres per minute. A) 750L/min
B) 600L/min
C) 450L/min
D) 150L/min

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.

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap