Question 798280
Let {{{ d }}} = Danny's age now
Let {{{ f }}} = his father's age now
{{{ f + 3 }}} = father's age in 3 years
{{{ d - 1 }}} = Danny's age last year
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(1) {{{ f + 3 = 2*( d - 1 ) }}}
(2) {{{ d + f = 86 }}}
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(1) {{{ f + 3 = 2d - 2 }}}
(1) {{{ 2d - f = 5 }}}
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Add (1) and (2)
{{{ 3d = 91 }}}
{{{ d = 30.333 }}}
and
(2) {{{ f = 86 - d }}}
(2) {{{ f = 55.667 }}}
Danny is 30 and 4 months
father is 55 and 8 months
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check:
(1) {{{ f + 3 = 2*( d - 1 ) }}}
(1) {{{ 55.667 + 3 = 2*( 30.333 - 1 ) }}}
(1) {{{ 58.667 = 2*29.333 }}}
(1) {{{ 58.667 = 58.667 }}}
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These are strange answers-you might want a 2nd opinion