Question 1064749
First, you need to find the cost for ONE adult and
ONE child to visit
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Let {{{ a }}} = the cost for one adult
Let {{{ b }}} = the cost for one child
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(1) {{{ 4a + 4b = 76 }}}
(2) {{{ 3a + 6b = 75 }}}
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(1) {{{ 2a + 2b = 38 }}}
(1) {{{ a + b = 19 }}}
and
(2) {{{ a + 2b = 25 }}}
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Subtract (1) from (2)
(2) {{{ a + 2b = 25 }}}
(1) {{{ -a - b = -19 }}}
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{{{ b = 6 }}}
and
(1) {{{ a + b = 19 }}}
(1) {{{ a + 6 = 19 }}}
(1) {{{ a = 13 }}}
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{{{ 5a = 5*13 }}}
{{{ 5a = 65 }}}
and
{{{ 3b = 3*6 }}}
{{{ 3b = 18 }}}
and
{{{ 5a + 3b = 65 + 18 }}}
{{{ 5a + 3b = 83 }}}
The cost for a family of 5 adults and 3 children
is $83
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check my math