so two fellows did all the carpeting in 10 days.
now, how long did "1" fellow work only? well, it worked for 10 days.
how long did the other fellow work for? well, it was working alongside the first one, and it was there for also 10 days.
so the two guys working together, really did 10+10 = 20 "days worth of work". So that the whole carpeting job can be done in 20 "days worth of work".
now if we want to finish it in 4 days, 20 ÷ 4 = 5.
so if we hire 5 guys, since each one will do 4 days worth, 5*4 = 20 <- the whole job.
Answer:
Neither
Supplementary
Supplementary
Step-by-step explanation:
1) 90 + 43 = 133
Since this value does not equate to 90 or 180. The answer is Neither
2) 61 + 119 = 180
Since the answer equates to 180. The answer is Supplementary
3) 90 + 90 = 180
Since the answer equates to 180. The answer is Supplementary
Answer:
Each notebook costs $2
Step-by-step explanation:
We have to find the amount she spent on each notebook.
22-10=12
We know she spent $12 on six notebooks
We need to divide to find the answer
12/6=2
Each notebook costs $12
Answer:
2.8
Step-by-step explanation:
using cosine rule
= 
s = 
= 2.842 = 2.8
13. Is 18
15. Is 86
17 is 5
19 is 15
21 is 24
23 is 29
