Question 1152538
RATES:
Oscar,  {{{(8/10)(lines/minutes)=4/5}}}, {{{lines/minute}}}
David, {{{(12/15)(lines/minutes)=(4/5)(lines/minute)}}}



IF WORK TOGETHER,
{{{(4/5+4/5)(lines/minute)}}}

{{{8/5}}}{{{lines/minute}}}



How much time for both together to write 32 lines?

{{{32(lines)(5/8)(minutes/line)}}}

{{{4*5*minutes}}}

{{{highlight(20*minutes)}}}