Question 1122141
Let {{{ y }}} = number of pages read
Let {{{ x }}} = minutes to read {{{ y }}} pages
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For direct proportion I can say:
{{{ y = k*x }}} where {{{ k }}} is a constant
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If {{{ y = 20 }}}, then {{{ x = 45 }}}
{{{ 20 = k*45 }}}
{{{ k = 4/9 }}}
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If {{{ x = 18 }}} then:
{{{ y = k*18 }}}
{{{ y = (4/9)*18 }}}
{{{ y = 8 }}}
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You can read 8 pages in 18 min