To create a blend valued at 9.00 per kg, how… | GMAT Sprint

Free Practice Question

PS · Problem Solving

505-555

Mixture

To create a blend valued at $9.00 per kg, how should tea priced at $6.00 per kg be combined with tea priced at $10.00 per kg?

Answer Choices

Correct answer marked below

1 : 2

1 : 3

Correct

1 : 4

2 : 3

3 : 2

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Explanation

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Official Explanation

Official

To determine the required mixing ratio, we apply the allegation method. We set up the prices as follows: $6.00 (lower price) and $10.00 (higher price) with the target price of $9.00 in the middle. The differences are calculated…

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Comments

SampadaNov 11, 2024

thankss

anjaliJul 10, 2024

Thankss

KingdomSep 7

Wait, is the answer 1:3? I got 1:3 using alligation but want to double check the order of the ratio.

JuanSep 9

Yeah I got that too. The $6 tea is cheaper so you need less of it... wait no, you need more of the cheaper one to pull the average down? Hmm let me redo it lol.

NikodemSep 13

I always mix up which is which in the ratio. Trick is just remember the answer choices, 1:3 is the only one that gives a 9 average.

AshwinJul 21

thanks, helpful

KukuaJul 26

got it in like 30 seconds, pretty straightforward weighted average. the $10 tea has to be balanced out by the cheaper one.

PrabhaankJul 27

same, this one felt more like a 505 than 555 tbh

What this question tests

What it tests

Your ability to reason about weighted averages and the composition of mixtures.

Common trap

Averaging the percentages of two solutions without weighting by their volumes.