Question 549566
Let {{{d}}} = distance covered by car
Let {{{s}}} = speed of car
given:
equation for car:
(1) {{{ d = s*1 }}} km
equation for plane:
(2) {{{ 850 - d = 16*s*1 }}}
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This is 2 equations and 2 unknowns,
so it's solvable
Substitute (1) into (2)
(2) {{{ 850 -s = 16s }}}
(2) {{{ 17s = 850 }}}
(2) {{{ s = 50 }}}
and, since
(1) {{{ d = s*1 }}}
(1) {{{ d = 50 }}}
The distance covered by the car was 50 km