Problema Solution
One day, Mrs Rubero paid $18.70 for 4 pounds of brown rice and 3 pounds of basmati rice. The next day, Mrs. Smith paid $13.30 for 3 pounds of brown rice and 2 pounds of basmati rice. If the prices were the same on each day, find the price per pound for each type of rice.
Answer provided by our tutors
let
x = the price per pound of brown rice
y = the price per pound of basmati rice
Mrs Rubero paid $18.70 for 4 pounds of brown rice and 3 pounds of basmati rice
4*x +3*y = 18.70
Mrs. Smith paid $13.30 for 3 pounds of brown rice and 2 pounds of basmati rice
3*x + 2*y = 13.30
by solving the system of equations
4*x +3*y = 18.70
3*x + 2*y = 13.30
we find
x = $2.5 per pound
y = $2.9 per pound
the price of the brown rice is $2.5 per pound.
the price of the basmati rice is $2.9 per pound.