A can do a certain job in 12 days. B is 60% more efficient than A. What is the number of days it takes B to do the same piece of work? a 5 b 7.5 c 9.5 d 10

Give chapter 5 lines and angles own questions for board exams 

Find the following percentage value:

1) 15% of 250.

Find the angle which is equal to its supplement.

Find the breadth of the rectangle whose length is 70 cm and perimeter 200 cm.

Convert 1 gallon into liters.

a. 3.05 liters

b. 3.78 liters

c. 4.05 liters

d. 4.78 liters