Three teachers shared a packet of chalk. The first teacher got 2/5 of the chalk and the second teacher received 2/15 of the remainder. What fraction the the third teacher receive?
-
A.
8/15 -
B.
11/25 -
C.
12/25 -
D.
13/25
Correct Answer: Option D
Explanation
First teacher received (frac{2}{5}) ∴Remainder (= 1 – frac{2}{5} = frac{3}{5})
2nd teacher received; (frac{2}{15} of frac{3}{5} = frac{2}{15} times frac{3}{5} = frac{2}{25})
3rd teacher will receive; (1-frac{2}{5}-frac{2}{25}=frac{25-10-2}{15}\=frac{13}{25})