Answer:
1:5
Explanation:
If a pack of 10 ball pens cost $12, then each ball pen must cost 12/10 = $1.20. The ratio of $0.25:$1.20 simplifies down to 1:5 (ans).
ratio of pencil by ball pen
pencil=25 per score
ball pen =12 per 10
10 pens 12rs
12÷10=6/5
20 pencils 25rs
25÷20=5/4
ratio=6/5÷5/4
6/5×4/5
24/25
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