Fill in the blanks to make the statements true:
If the area occupied by 15 postal stamps is 60 cm2, then the area occupied by 120 such postal stamps will be…………...
∵ The area occupied by 15 postal stamps = 60cm2
∴the area occupied by 1postal stamps = 
Similarly, the area occupied by 120such postal stamps
= 4×120 = 480cm2
40