1.Type the missing number to complete the proportion.
 5 pages in 1 day = ___________ pages in 7 days.
 2.Type the missing number to complete the proportion.
 7 chairs at 1 table = ___________ chairs at 9 tables.
 3.Type the missing number to complete the proportion.
 51 students fit on 1 bus = ___________ students fit on 8 buses.