RRB Junior Engineer Stage 1 Model Papers 2

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Question : 15 of 99

Marks: +1, -0

A sells an article to B at a gain of 10% , B sells it to C at a gain of 5%. If C pays ₹ 462 for it, what did it cost to A ?

₹ 500
₹ 450
₹ 600
₹ 400

Solution:

Cost to A

{───🢖}↖{10% ↑}

cost to B

{───🢖}↖{5% ↑}

cost to C
⇒Cost to A

×110/100×105/100=462

⇒Cost to A

={462×100×100}/{110×105}=400

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