2004
Mathematics
JAMB
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: 13/25
Explanation
First teacher received 2/5 ∴Remainder =1−2/5=3/5 2nd teacher received; 2/15 of 3/5 = 2/15 × 3/5 = 2/25 3rd teacher will receive; 1−2/5 – 2/25 = (25−10−2)/15 = 13/25
First teacher received 2/5 ∴Remainder =1−2/5=3/5 2nd teacher received; 2/15 of 3/5 = 2/15 × 3/5 = 2/25 3rd teacher will receive; 1−2/5 – 2/25 = (25−10−2)/15 = 13/25THIS WEEK's
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