We all scream for ice-scream!

Probability Level 2

An ice-cream shop conducted a survey into their most popular flavour. They found that out of 43 people surveyed, 20 people liked chocolate, 15 people liked vanilla and 15 people liked neither. Provided that someone likes chocolate, what is the chance they also like vanilla?

Note: Give your answers in the simplest form.

15 25 \frac{15}{25} 1 6 \frac{1}{6} 1 4 \frac{1}{4} 0 1 \frac{0}{1}

Simon Smith by Simon Smith , 14, Australia

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1 solution

From the given informations, out of ( 43 − 15 ) (43-15) or 28 28 people, 13 13 like chocolate flavor, 8 8 like vanilla flavor, and 7 7 like both. Hence the required chance is 7 28 = 1 4 \dfrac{7}{28}=\boxed {\dfrac{1}{4}}

0 Helpful 0 Interesting 0 Brilliant 0 Confused

i answered 1/4 and got it wrong

Matthew Ross - 1 year, 5 months ago

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