In a school there are 30 more boys
than girls. One-quarter of the boys
and two-thirds of the girls are boarders.
If there are 255 boarders, find the
number of students in the school.
Simba had 57 denomination notes
which he deposited in his account.
He had six times as many two-hundred
shilling notes as one-thousand
shilling notes and twice as many
one-hundred shilling notes as two-
hundred shilling notes. The rest were
fifty shilling notes. If he deposited
a total of sh 7750, find the number
of fifty shilling notes he had.
A rostum is made by cutting off
the upper part of a cone along a
plane parallel to the base at (2/3) up
the height. What fraction of the
volume of the cone does the
rostum represent?
Each month a store owner can spend at
most $100,000 on PC′s and laptops. A
PC costs the store owner $1000 and a
laptop costs him $1500. Each PC is sold
for a profit of $400 while a laptop is sold
for a profit of $700. The store owner estimates
that at least 15 PC′s but no more than
80 are sold each month. He also estimates
that the number of laptops sold is at most
half the PC′s. How many PC′s and how
many laptops should be sold in order to
maximize the profit?