1. The sum of 2 numbers is 10. Their difference is 4. What are the numbers?
2. Two clips and 3 pins cost P 15 but 3 clips and 2 pins cost P 20. How much does each cost?
3. Jam is 3 years older than Jun. The sum of their ages was 13. How old are they?
4. The sum of 2 numbers is 1. The larger is 5 more than thrice the smaller. What are the numbers?
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Answer:
Step-by-step explanation:
Let x=jam's age
Let y=jun's age
Equation1: x=y+3
equation2: x+y=13
substitute eq.1 to eq.2= y+3+y=13
solution1 age of jun: 2y+3=13
2y=13-3
2y/2=10/2
y=5 jun's age
solution2 age of jam: x=y+3
x=5+3
x=8
therefore x+y=13
8+5=13
Verified answer
Answer:
1. 7 and 3
2. 6 pesos for clips and 1 peso for pins
3. Jam is 8yrs old
June is 5yrs old
4. 2 and -1