Question 604541
there are 12 boys and 12 girls in a science class.
 if 6 boys can read 6 science journals in 6 weeks and 4 girls can read 4 science journals in 4 weeks, how many science journals can the entire class read in 12 weeks?
:
Find how many boy weeks required to read 1 journal
{{{(6*6)/6}}} = 6 boy-weeks per journal
:
Find how many girl weeks required to read 1 journal
{{{(4*4)/4}}} = 4 girl-weeks per journal
:
"how many science journals can the entire class read in 12 weeks?"
boys: {{{(12*12)/6}}} = 24 journals
girls {{{(12*12)/4}}} = 36 journals
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Class total: = 60 journals