Answer:
the largest is 620cm the next is 4.4 dam and the smallest is 0.52 km
X/28 = 5/7
x = 28 * 5 / 7
x = 20
answer
x = 20 ft
40x - 24 - 33x - 77 = 102
40x - 33x = 102 + 24 + 77
7x = 203
x = 29
You forgot to put the problem but choose answers that will divide evenly