profit and loss Model Questions & Answers, Practice Test for ibps rrb po prelims (2023)
A sells an article to B at a gain of 10% , B sells it to C at a gain of 5%. If C pays Rs. 462 for it, what did it cost to A ?
Answer: (d)
Cost to A $⟶ ↖{10% ↑}$ cost to B $⟶ ↖{5% ↑}$ cost to C
⇒ Cost to A × $110/100 × 105/100$ = Rs. 462
⇒ Cost to A = ${462 × 100 × 100}/{110 × 105}$ = Rs. 400
Rajendra bought a mobile with 25% discount on the selling price. If the mobile cost him Rs. 4,875, what is the original selling price of the mobile?
Answer: (c)
Let SP of Mobile = x
discount = 25%
${75x}/100$ = 4875
$ x = {4875 × 100}/75$ = Rs. 6500
A grocer purchased 80 kg of sugar at Rs. 13.50 per kg and mixed it with 120 kg sugar at Rs. 16 per kg. At what rate should he sell the mixture to gain 16%?
Answer: (a)
C.P. of 200 kg of mixture = Rs. (80 × 13.50 + 120 × 16) = Rs. 3000.
S.P. = 116% of Rs.3000
= Rs. $(116/100 × 3000)$ = Rs. 3480.
∴ Rate of S.P. of the mixture = Rs.$(3480/200)$ per kg
= Rs. 17.40 per kg.
Meera purchased 23 bracelets at the rate of Rs.160 per bracelet. At what rate per bracelet should she sell the bracelets so that profit earned is 15%?
Answer: (b)
SP = CP × $(100 + \text"P"%)/100$
= 160 × $115/100$ = 184
A milkman sells 120 litres of milk for Rs.3360 and he sells 240 litres of milk for Rs.6120. How much discount does the trader give per litre of milk, when he sells 240 litres of milk?
Answer: (c)
SP of 120 litres = 3360
SP of 1 litre = $3360/120$ = 28
SP of 240 litres = 6120
SP of 1 litre = $6120/240$ = 25.5
Discount per litre = 28 - 25.5 = 2.5
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