Answer: B.), D.), and E.)
Step-by-step explanation:
That’s the answer on USAtestprep
Answer:
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Ahmad and Kumar together can paint a house in 12 days. Kumar and Chong beng together can complete the same job in 15 days while Ahmad and Chong beng together will take 20 days to paint the same house. How many days will it take Ahmad, Kumar and Chong beng to complete the job together?
The trick (SOP) for work problems is that we reduce the work to unit rate.
Ahmad and Kumar together can paint a house in 12 days.--->Ahmad and Kumar together can paint 1/12 the house in 1 days.
A+K = 1/12 of house in a day
K+C= 1/15 of house in a day
A+C= 1/20 of house in a day
Adding all together
2(A+K+C) = 1/12+1/15/+1/20 = 1/5 in a day
A+K+C = 1/10 in a day
So they take 10 days to finish the job together.
Answer:
the answer is e
Step-by-step explanation:
96 (high score) - 67 (low score) = 29 (range)
Area of rhombus = 
where x and y are diagonals.
Given length of one diagonal is 4.5 dm
So, let x= 4.5dm
1 dm = 10 cm
4.5dm= 45cm
area =
so, 
y = 24 cm
The two diagonals are x= 45cm and y = 24cm
Since diagonals bisect each other, we get 22.5cm and 12cm
Using right triangle formula
r = 10.588cm
Distance of center to the side = 
= 5.294 cm
