Question 1169366
<br>
{{{a+b=12}}} [1]<br>
{{{.75a+1.05b=10.20}}} [2]<br>
Use elimination: multiply the first equation by .75 and then compare the two equations (i.e., subtract one equation from the other):<br>
{{{.75a+.75b=9}}}
{{{.75a+1.05b=10.2}}}
{{{.3b=1.2}}}
{{{3b=12}}}
{{{b=4}}}<br>
ANSWER: He bought 4 pounds of bananas, which means 8 pounds of apples.<br>
CHECK: 8($.75)+4($1.05) = $6+$4.20 = $10.20<br>