Q1) Find the values of p and q for which the system of equations have infinite number of solutions.
Q2) Solve the following pair of equations by cross-multiplication method
a²x+b²y=c² and b²x+a²y=d²
Q3) 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days. Find the time taken to finish the work by one man alone.
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