Question 1194091
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The solution from the other tutor is fine -- but very formal....<br>
A more informal solution seems more appropriate to me.<br>
Given the ratio science:art = 2:5, we know the number of science books is 2/5 the number of art books. So the number of science books if there are 1000 art books is just<br>
(2/5)*1000 = 400<br>