That one is super easy i believe you can get that !!
Answer:
Let p be the amount invested at 8%. Then the amount invested at 5% would be 30,000-p. So:
.08p+.05(30,000-p)=2100
.03p+1500=2100
.03p=600
p=20,000
$20,000 was invested at 8%; $10,000 was invested at 5%
Step-by-step explanation:
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There is a total of 30 erasers
The answer is 210 children tickets were sold . if you multiply the first equation by 7 it would be 7x+7y=2590. then subtract equation 2 from 1 you will have 4x=840 so x=210. Also you can use substitution method.
7/8 gallon of water/ (1/2 hr)= 1.75 gallons of water/ hr.
The swimming pool is leaking 1.75 gallons of water/ hr.
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