Tyee wants to buy disposable masks for his family. Blue masks cost $3.50 and white masks cost $2. He has 42 dollars to spend and
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Let, snake catches the mouse in t hours. Till then mouse is travelling from
( t + 1.5 ) hours.
Distance, travelled by mouse in t hours is, .
To catch the mouse snake had to travel the same distance d in t hours.
So,
Therefore, snake will catch mouse in 1.5 hours.