Question 324746
Rate*Time=Distance
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Let P be the rate of the plane in still air.
Let W be the rate of the wind.
{{{(P-W)3=2280}}}
1.{{{P-W=760}}}
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{{{(P+W)5=6100}}}
2.{{{P+W=1220}}}
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Add eq. 1 and eq. 2 to eliminate W.
{{{2P=1980}}}
{{{highlight(P=990)}}}kph
Then from eq. 1,
{{{990-W=760}}}
{{{highlight(W=230)}}}kph