Question 1110374
Let {{{ S }}} = the total sum of money
When ratios are 2:4:5,
John's share: {{{ (2/11)*S }}}
Paul's share: {{{ (4/11)*S }}}
Robert's share: {{{ (5/11)*S }}}
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When ratio's are 1:1:1
The shares are {{{ (1/3)*S }}} each
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{{{ (1/3)*S = ( 2/11 )*S + 50 }}}
Multiply both sides by {{{ 33 }}}
{{{ 11s = 6s + 1650 }}}
{{{ 5S = 1650 }}}
{{{ S = 330 }}}
The total sum is $330