Question 509189
Tom, Dave, and Harry caught {{{t}}},{{{d}}}, and {{{h}}}
number of crabs
given:
(1) {{{ d = t + 5 }}}
(2) {{{ h = 2d }}}
(3) {{{ t + d + h = 75 }}}
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(1) {{{ t = d - 5 }}}
Substitute (1) and (2) into (3)
(3) {{{ d - 5 + d + 2d = 75 }}}
(3) {{{ 4d = 80 }}}
(3) {{{ d = 20 }}}
and
(2) {{{ h = 2*20 }}}
(2) {{{ h = 40 }}}
and
(1) {{{ t = 20 - 5 }}}
(1) {{{ t = 15 }}}
Tom, Dave, and Harry caught 15, 20, and 40 crabs