SOLUTION: Hi Mrs Robinson bought some chocolates and lollipops in the ratio of 7 to 4. The price of all the chocolates to the price of all the lollipops was in the ratio of 5 to 2. If each

Question 1207183: Hi
Mrs Robinson bought some chocolates and lollipops in the ratio of 7 to 4. The price of all the chocolates to the price of all the lollipops was in the ratio of 5 to 2. If each lollipop cost 15c less than each chocolate how many lollipops did she buy.
Thanks
Found 3 solutions by greenestamps, ikleyn, josgarithmetic:
Answer by greenestamps(13198)   (Show Source): You can put this solution on YOUR website!

Let x be the cost in cents of each lollipop
Then x+15 is the cost in cents of each chocolate

Since the chocolates and lollipops were in the ratio 7:4, the ratio of the costs of the chocolates to the cost of the lollipops was .

That ratio of costs was 5:2

From the given information, we know...
cost of each lollipop: x = 35 cents
cost of each chocolate: x+15 = 50 cents

But the question asks us to find the number of lollipops she bought -- and there is no information given that allows us to answer that question. We only know that the chocolates and lollipops were in the ratio 7:4. So, for example...

7 chocolates and 4 lollipops
cost of chocolates 7(50) = 350, cost of lollipops 4(35) = 140, ratio of costs 350:140 = 5:2

35 chocolates and 20 lollipops
cost of chocolates 35(50) = 1750, cost of lollipops 20(35) = 700, ratio of costs 1750:700 = 5:2

etc....

Another problem (from the same student maybe) for which we can't find the answer....

Answer by ikleyn(52778)   (Show Source): You can put this solution on YOUR website!
.

I agree with @greenestamps that the problem, as it is posed, can not be answered.

To it, I would add that wording in the problem is perpendicular to the meaning of words.

Thus, the problem says " The price of all the chocolates . . . ".

This fragment is incorrect, since the term " price " relates to single item/(single piece of chocolate).
It can not be used in this combination " price of all the chocolates . . . "

The same notice is to the fragment " the price of all the lollipops . . . "

For Math problems, it is not the same which word/words to use . . .

As a conclusion, this problem does not fit for any reasonable purpose.

It is good only to scare people around.

Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
This sentence is troubling:
The price of all the chocolates to the price of all the lollipops was in the ratio of 5 to 2.

One might have to assume you really mean, "cost" and not "price".

PRICE(cents) AMOUNT COSTS CHOCOLATES 5y/(7x) 7x 5y LOLLIPOPS 2y/(4x) 4x 2y DIFFERENCE 15

One useful equation would be

Maybe want to change the form using ;

--------------Can you find some whole numbered solution? More than one solution, as whole numbers?

Something still seems off here.
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