(System of equations) The difference of two numbers is 3. Their sum is 77. Find the numbers.
1 answer:
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In 6 months, they will have same amount of money.
Step-by-step explanation:
Let,
x be the number of months
Given,
Joe's savings = $200
Per month deposit = $50
J(x)=200+50x Eqn 1
Kathy savings = $50
Per month deposit = $75
K(x)=50+75x Eqn 2
For same amount;
J(x)=K(x)
Dividing both sides by -25;
In 6 months, they will have same amount of money.
Keywords: functions, division
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