Question

If the thick ness of a pile of 18coins is 40mm,find the thickness of a pile of 450coins.

Answer 1

Answer:

1000

Step-by-step explanation:

$let \: x \: be \: thickness \: of \: a \: pile \\ 18x = 40 \\ x = 40 \div 18 = 20 \div 9 \\ thickness \: of \: a \: pile \: of \: 450 = (20 \div 9) \times 450 = \\ 1000$