Question 130391
since 7.7 is closer to 8 than to 7, there must be more of the 8% (more than 100lb)


let x="pounds of 8%", so 200-x="pounds of 7%"


(8%)(x)+(7%)(200-x)=(7.7%)(200) __ .08x+14-.07x=15.4 __ .01x=1.4