Answer:
The time taken by both boys to complete work = 2.73 hours
Step-by-step explanation:
Time taken by rayan to dig hole 
= 5 hours
Time taken by castel to dig hole 
= 6 hours
Now the time taken by both persons working together
Put all the values in above formula we get
T = 2.73 hours
Therefore the time taken by both boys to complete work = 2.73 hours
Answer:
450
Step-by-step explanation:
3*150 because the 150is your main number or otherwise known as "b" and then 3 is the multiplier so 3 * 150
Answer:
7 x 4 = 28
28 x 1/2(dividing by 2) = 14, 14 x 2(two triangles) = 28
4 x 5 = 20(area of square in the middle)
5 x 8 = 40(area of square on one side), 40 x 2 = 80(area of squares on both sides)
Now lets add the given areas:
28 + 20 + 80 = 128 square is your answer.
Answer: 
Step-by-step explanation:
Use the power rule for differentiation.
