3.
A biscuit tin contains 150 biscuits. 22% are digestives and 36% are shortbread.
a) How many biscuits in the tin are digestives?
22=0.22
150x0.22
= 33
b) Marguerite will eat any biscuit except for digestives and shortbread.
How many biscuits in the tin will she eat?
33
c) Paolo eats some of the digestive biscuits. Now there are twice as many shortbread
biscuits in the tin as digestive biscuits. How many digestive biscuits did Paolo eat?
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