Question

@hero Find the unit rate, and then use it to solve the problem. A trucking company makes 50 deliveries in 5 days.

How long will it take for 400 deliveries?

A.
8 days

B.
10 days

C.
20 days

D.
40 days

Answer 1

@amistre64

Answer 2

what the unit rate?

Answer 3

think, how long does it take to make 1 (a single unit) delivery based on the given information? 1 delivery per ?? days

Answer 4

i don't get this question at all

Answer 5

i just explained it ....

Answer 6

if we make 50 deliveries in 5 days; then for some scalar value, n, we can make 50n deliveries in 5n days

so the question is: when does 50n = 1? OR to reduce the computations .... when does 50n = 400?

Answer 7

8

Answer 8

50n = 400 when n=8 yes :) but thats not the unit rate, its the straight forward solution

so, it takes us 5n days to do it ... how many days then?

Answer 9

C

Answer 10

C is 100 in roman numerals so im going to say no ... it takes us 5*8 = 40 days ;)

Answer 11

An automated car wash can wash 30 cars in 5 hours.

How long would it take to wash 120 cars?

A.
15 h

B.
20 h

C.
25 h

D.
30 h

Answer 12

scale the ratio ... what do we get?

Answer 13

if you know how to work simliar triangles or rectangles ... thats all this is

Answer 14

30c=120

Answer 15

good so far, i like it

Answer 16

B

Answer 17

yep, the scalar is 4, so 5*4 = 20

Answer 18

A worker at a computer factory can assemble 8 computers per hour.

How long would it take this worker to assemble 200 computers?

A.
8 h

B.
20 h

C.
25 h

D.
200 h

Answer 19

8 in 1 hour

8n in n hours ... whats the scalar?

Answer 20

if anyting, 80 in 10 160 in 20 .. so a little more than 20 seems logical

Answer 21

B.

Answer 22

not B .... 200 computers not 160 ...

Answer 23

D

Answer 24

do the math :/

Answer 25

am i still wrong

Answer 26

you tell me, chk your results

does 8*200 = 200?

Answer 27

does 8*20 = 200?

does 8*8 = 200?

does 8*25 = 200?

Answer 28

8x25=200

Answer 29

C