Mathematics
Grade 8
15 min
Solve a system of equations using substitution: word problems
Solve a system of equations using substitution: word problems
Tutorial Preview
1
The sum of two numbers is 15. One number is 3 more than the other. Find the numbers.
2
A pen and a pencil cost $3 total. The pen costs $1 more than the pencil. Find their costs.
3
A rectangle's length is twice its width. Its perimeter is 18 inches. Find the dimensions.
Sample Practice Questions
Easy
The sum of two numbers is 10. One is 4 more than the other. What are the numbers?
0.(7, 3)
1.(6, 4)
2.(8, 2)
3.(9, 1)
Easy
A bat and a ball cost $11 total. The bat costs $9 more than the ball. Find the ball's cost.
0.$1
1.$2
2.$9
3.$10
Easy
A rectangle's length is 1 more than its width. The perimeter is 10. Find the width.
0.1
1.2
2.3
3.4
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