SOLUTION: Use ratios to write an equation that can be used to solve each of the following problems. Then solve the equations: a) What number is 25% of 40? b) Twenty-five is what percent

Algebra ->  Percentages: Solvers, Trainers, Word Problems and pie charts -> SOLUTION: Use ratios to write an equation that can be used to solve each of the following problems. Then solve the equations: a) What number is 25% of 40? b) Twenty-five is what percent       Log On


   

Question 24914: Use ratios to write an equation that can be used to solve each of the following problems. Then solve the equations:
a) What number is 25% of 40?
b) Twenty-five is what percent of 40?
c) Twenty-five is 40% of what number?
Answer by quentin252(19) About Me  (Show Source):
You can put this solution on YOUR website!
ok
if you got this
A is B of C
we know A=B*C
so ...
A) __ is 25% of 40 --> __ = (25%)(40) = 10
B) 25 is __% of 40 --> 25 = (__%)(40) --> __% = 25/40 = 5/8
.. --> __ = (5/8)*100 = 125/2 = 64.5
C) 25 is 40% of __ --> 25=(40%)(__) --> __=25/(40%)=25/.40=125/2=64.5