Question

$7200 \div x = 800 \\ x \times 700 = 42000 \\ 60 \times x = 5400$

Answer 1

7200 : x = 800
x = 7200 : 800
x = 9

x • 700 = 42000
x = 42000 : 700
x = 60

60 • x = 5400
x = 5400 : 60
x = 90