Step-by-step explanation:
2⁄5 of 1⁄3 = ⅖×⅓= 2/15
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Answer:
13
889 dollars
let ratio 4:5 be 4x& 5x
according to the question
5x=75
x=75/5=15
the number of Maths books=4x=4×5=20 is your answer