Question 1163226
p, price for child
2p, price for teacher


{{{120p+15*2p=180}}}

{{{150p=180}}}

{{{15p=18}}}

{{{5p=6}}}

{{{p=6/5}}}

{{{highlight(p=1.20)}}}


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Second question, how many children c,
{{{1.2c+20*2*1.20=240}}}
solve for c.