Question

.. An alloy consists of 27.5 gm of copper and 2.75gm
of tin. Find the ratio by weight of copper to the
alloy​

Answer 1

The answer is 11:1.1 as 27.5+2.75=30.25

30.25÷27.5= 1.1 and 30.25÷2.75=11

$30.25 \div 27.5$

$30.25 \div 2.75$