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  1. The marked price of a shirt and trousers are in the ratio 1 : 2. The shopkeeper gives 40% discount on the shirt. If the total discount on the set of the shirt and trousers is 30%, the discount offered on the trousers is
    1. 15%
    2. 20%
    3. 25%
    4. 30%
Correct Option: C

Let the marked price of shirt be p and that of trousers be 2p.
Let the discount on the trousers be q%. Then,
According to question ,

p ×
40
+ 2p ×
y
= 3p ×
30
100100100

⇒ 40p + 2pq = 90p
⇒ 2q = 90 – 40
⇒  q =
50
= 25%
2



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