manu.pant wrote: ↑Tue May 11, 2010 7:24 am
At the wholesale store you can buy an 8 pack of Hot dog for $1.55, an 20 pack for $3.05 , and 250 pack for $22.95. What is the greatest nos of HDs that u can buy from the store for $200.
Ans: 2100
Solution:
The unit price (i.e., price per hot dog) of an 8-pack is $1.55/8 ≈ $0.19, that of a 20-pack is $3.05/15 ≈ $0.15 and that of a 250-pack is $22.95/250 ≈ $0.09. Since the 250-pack has the lowest unit price, we should buy as many 250-packs as we can.
With $200, we can buy 200/22.95 = 8 complete 250-packs, and we will have 200 - 8 x 22.95 = $16.40 remaining.
Next, we will buy as many 20-packs, which will be 16.40/3.05 = 5 complete 20-packs, and we will have 16.40 - 5 x 3.05 = $1.15 remaining.
We note that $1.15 is insufficient for additional purchases. Thus, we have purchased 8 x 250 + 5 x 20 = 2,100 hot dogs.
Answer: 2,100
