Plz any help appreciated I‘m rly stuck:( 1.) mr kindle invested his 210,000 retirment funds in 2 bonds. One yieldig 80% and one yielding 10% if his total annual income from both investments is $8,300 how much did he invest at each rate? 2.) in an alloy of 150 pounds of zinc copper, there are 100 pounds of copper. How much copper must be added so that the alloy may be 10% of zinc?
Well I got question 2 so here check to see if it is correct though: 2) in an alloy of 150 pounds of zinc copper, there are 100 pounds of copper. How much copper must be added so that the alloy may be 10% of zinc? A: If there are you remove 10% from 150 you should get 135. So subtract 100 from 135 and you get 35 which means that 35 pounds of copper must be added in order to make the alloy 10% zinc. To get the percent you can use your calculator and just type 150 - 10 (and click % button) if it comes up 15 before you press then press the sign and you should get 135 or divide 150 by 10.
