# #66 there are 40 cows and chickens in the farmyard. one af

#66 : there are 40 cows and chickens in the farmyard. one afternoon jack, found that there were 100 legs in all, how many cows and chickens are there? #70: if 6 less then four times a number is 64, what is the number?#72: the sides of a rectangle are in the ratio 5:7 and tis perimeter is 96 cm. what is the area of rectangle in square centimeters? #50 : micheal drove to a friends house at the rate of 40 mi ph he returned by the same route by the rate of 45mi/h , the driving time for the round trip was 4 h. what is the distance michael traveled?