Enic completed a 400 -m race in 80 s . Simon completed the same race at \( \frac{4}{5} \) of Enic's speed. How many seconds did Simon take to complete the race?

c) \( 4+\frac{5}{2}-\frac{1}{3}= \)

b) \( \frac{1}{3}-\frac{1}{2}+\frac{2}{5}= \)

A classroom needs 3,200 paper clips for a project. If there are 200 paper clips in a packy how many packages will they need in all? (A) 160 (B) 1,600

a) \( \left[4^{3}-5(8+2)\right]: 7= \)

A homebuilder is putting new shelves in each closet he is building. He has 2,592 shelves h his inventory. If each closet needs 108 shelves, how many closets can he build? (A) 2.4 (B) 108 (C) 42 (D) 24