Cars Sold by Dealers

Number of cars sold by P in February, April and May = $94 + 108 + 98 = 300$. Number of cars sold by S in March, May and June = $90 + 89 + 91 = 270$. Required ratio = $300 : 270 = 10 : 9$.

Total cars sold by P from Feb to June = $94 + 85 + 108 + 98 + 95 = 480$. Total cars sold by all dealers in June = 396. Required percentage = $\frac{480 - 396}{396} \times 100 \approx 21.2\%$.

Cars sold by Q in April, May and June = $97 + 102 + 108 = 307$. Total cars sold by all dealers in February and April = $400 + 400 = 800$. Required percentage = $\frac{307}{800} \times 100 = 38 \frac{3}{8}\%$.