Problema Solution
Thirty percent of the greens were added to fifteen percent of the purples and the total was 21.four times the number of purples was 10 more then 3 times the number of greens. How many were green and how many were purple?
Answer provided by our tutors
Let
g = the number of greens
p = the number of purples
30% of the greens were added to 14% of the purples and the total was 21:
0.30g + 0.15p = 21
4 times the number of purples was 10 more then 3 times the number of greens:
4p = 10 + 3g
We have the following system of equations:
0.30g + 0.15p = 21
4p = 10 + 3g
........
click here to see the system of equations solved for g and p
........
g = 50 green
p = 40 purple
There were 50 green and 40 purple.