m3lp3l
15.01.2020 •
Mathematics
At the fair the ratio of male to female was 4: 5 if there are 180 people at the fair how many males are there i need this done by tomorrow
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Ответ:
180/9=20
(20)(4)=80 males
(20)(5)=100 females
Ответ:
Money in her purse is Rs. 500.
Step-by-step explanation:
Let the money in her purse = Rs.
Let the money in her Money box = Rs.
As per question statement,
Double the money in her purse (i.e.
........ (1)
Triple the money in her purse (i.e.To find: Money in her purse = ? i.e.
Let us solve for
using the two linear equations.
We can use substitution method here i.e. find value of one variable from one equation and then substitute that value in other equation.
Using equation (1), we get the value of
as follows:
Now, let us put this value of y in equation (2) to find the value of
:
Money in her purse is Rs. 500.