SOLUTION: x and y are two numbers where x is greater than y.
the sum of the two numbers is 20.
twice the larger number is equal to 3 times the smaller one.
(a) Write down a [pair of simul
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Question 744845: x and y are two numbers where x is greater than y.
the sum of the two numbers is 20.
twice the larger number is equal to 3 times the smaller one.
(a) Write down a [pair of simultaneous equations in x and y.
(b) Solve the simultaneous equations in (a), to find the two numbers.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
x+y=20>>>>>>>>>>>>>>>>>>>>(1)
2x=3y
2x-3y=0>>>>>>>>>>>>>>>>>>(2)
multiply first equation by 3
3x+3y=60
add to (2)
5x=60
x=12
substitute x=12 in equation (1)
x+y=20
12+y=20
y=20-12
x=12
y=8
x=12 & y =8
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