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krek1111 [17]
3 years ago
5

please help me to solve this word problems leading to quadratic equation: A girl is 6 years younger than her brother. the produc

t of their age is 135. find their ages.​
Mathematics
1 answer:
vova2212 [387]3 years ago
5 0

Answer:

Brother is 70.5 and sister is 64.5

Step-by-step explanation:

you will need to set up a simple equation and give out variables.

Girls age = 6-x

Brother's age= x

the you will take those 2 and add them and place them equal to 135:

6-x+x=135

6-2x+6=135+6

The 6 cancels out

2x=141

2x/2=141/2

x=70.5

The brother's age would be 70.5 then and the girl's would be 64.5

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