Register
An amount of $700 is invested partly at 8% and partly at 10%. The yearly income from both investments is $64. The amount invested at 8% is k dollars. What is the value of k?
62.1k views
3 votes
An amount of $700 is invested partly at 8% and partly at 10%. The yearly income from both investments is $64. The amount invested at 8% is k dollars. What is the value of k?

User Ser
by
7.5k points

1 Answer

1 vote
A8% is X
10% is 700-X

X(.08)+ .10(700-X)= 64
.08x+ 70-.10X=64
-.02X+70=64
-70=-70
-.02x= -6
Divide by -.02
X= 300

Answer $300 was invested at 8%

Check 300 times .08= 24. 700-300=400 times .10 = 40 and 24+40=64
User JonAlb
by
8.3k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.0m questions

11.6m answers

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!