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This can be avoided if u read the question closely, it’s says "40% of the *total work* is done by X"

some good source dor practicing dqta insights questions

What’s the most efficient way to solve wet misture problems? Struggling with them..

*Mixture

Teeter totter method

Hi guys I am currently struggling with forming equations based off on questions, could I get some help from any source ? Any help would be appreciated

There is an easy method for doing mixture.

the available proportions can get the answer for these sums. Let’s say I have a 20 litres mixture of milk and water with 75% milk contain. There is another X litres of mixture containing 60% Milk, and if I wish to create a mixture with 66%of milk content, First I will find the difference between the available proportions and desired proportion.

In this case,
Diffe between 75-66 = 9
Diffe between 60-66 = 6, Now we use them altered values for their ratio:
75:60
| |
6 : 9
Simplifying the ratio;
2 : 3


As it can be seen in the ratio 2/5 is actually given as 20 litres,
The needed quantity of other mixture is 30 Litres

this method can help find the total quantity needed for final mixtures also. (note: if the second mixture does not have a common content then take it as 0% i.e. here one milk proportion was 75% and other was 60%, if the second liquid is only pure water then use it as 0% milk and calculate the difference with desired proportion.)

Thank you so so much!!!!! 😊

hi everyone, I am using target test prep and I am a bit confused. Isn’t it wrong to first subtract 8 from 12 and then divide it?

ahhh

nevermind haha

It’ll give the same answer regardless

"If 𝑥−𝑧>𝑦−z, then which of the following must be true?"
(I)𝑥+𝑧<𝑦+z (II)𝑥z<𝑦x (III)x/z>𝑦/z

Choose one answer
(I) only
(II) only
(III) only
(I) and (II) only

­Check this one here:

https://gmatclub.com/forum/if-x-z-y-z-t ... 92352.html

While solving any such ques you can use PEMDAS approach(PEMDAS is an acronym for the words parenthesis, exponents, multiplication, division, addition, subtraction.) Hope it helps!

I Only must be the answer according to me.

None of the above, according to me

None

Ex case 0, -1, 0

The first option is wrongly mentioned, it should be x+z>y+z. This question is discussed here: if-x-z-y-z-then-which-of-the-following-must-be-true-292352.html