







Maximize monthly revenue 
20190523 

a student pose la question : A realestate firm owns 100 garden type apartments. At RM400 per month, each apartment can be rented. However, for each RM10 per month increase, there will be two vacancies with no possibility of filling them. What rent per apartment will maximize monthly revenue? Penny Nom lui répond. 





Two circles 
20190523 

Arman pose la question : Two concentric circles have their centres at
point C. The radius of the smaller circle is
8 cm. The length of chord AB is 26 cm and
is tangent to the smaller circle. What is the
circumference of the larger circle? Penny Nom lui répond. 





Do all angles have to be equal to a number? 
20190515 

Malik pose la question : Do all angles have to be equal to a number? By all angles I mean adjacent, vertical, supplementary, complementary. Penny Nom lui répond. 





What is the original price? 
20190515 

Tyler pose la question : if 45% of an item is $90.00, then what is the original price Penny Nom lui répond. 





An 80 acre square 
20190511 

Linda pose la question : How long and wide is an 80acre piece of land that is square?
How long and wide is a 160acre piece of land that is square? Penny Nom lui répond. 





Pennies, nickels, dimes, and quarters 
20190509 

william pose la question : Ann has 177 coins (pennies, nickels, dimes, and quarters)
Her total value is $19.90
She has the same number of nickels as dimes.
She has the same number of quarters as dimes.
How many of each does she have? Penny Nom lui répond. 





Subdividing land 
20190509 

Reuben pose la question : This is the measurements of my plot, AB 46.7M, BC 193.1, CD 198.5 & DA 208.25 (Clockwise naming of sides) angle A at 90 degrees. My questions is how do i subdivide this plot from the bottom having lines running parallel to CD, eg two 2acre plots. the the remaining part becomes my compound (Uper part at line AB) Harley Weston lui répond. 





The volume of a wall 
20190508 

Peter pose la question : I’m building a dry stack stone wall which is 36” wide at the base, 42” tall and 24” wide at the top. What would be the volume for a 36” long segment ?
Thanks, Peter Penny Nom lui répond. 





Why Mean? 
20190508 

Jill pose la question : A group of teachers were trying to figure out why the”mean” is called mean  do you know?? Penny Nom lui répond. 





Two numbers 
20190503 

fds pose la question : The difference of two numbers is 2, and their sum is 4. What are the two numbers? Penny Nom lui répond. 





Volume and Surface area of a sphere 
20190503 

Caitlin pose la question : Why does the surface area formula of a sphere have a squared radius while the volume of a sphere has a cubed radius? Penny Nom lui répond. 





A repeating decimal divided by a whole number 
20190501 

Emily pose la question : How do you divide repeating decimals by whole numbers? Penny Nom lui répond. 





If 45% of an item is 90.00 
20190501 

Gavin pose la question : If 45% of an item is 90.00 what is the original price? Penny Nom lui répond. 





A hemispherical bowl 
20190429 

Innocent pose la question : Abc is the section through a hemispherical bowl centre O radius 15cm. It contains water whose maximum depth is 8cm. What is the width of the water surface? Penny Nom lui répond. 





A circle inscribed in a triangle 
20190428 

Daksh pose la question : O is the centre of the inscribed circle in a 30°60°90° triangle ABC right angled at C.
If the circle is tangent to AB at D then the angle COD is Penny Nom lui répond. 

