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06 Mar 2021, 08:39
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Hoozan
That is because 1/3 is not "exactly" 33.33%, but is 33.33333....%.
Hence, it's best to solve this question in fractions (rather than converting everything into percentage).
mohitwadhwa28
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03 Jun 2022, 20:26
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A better understanding would be to:
Let the total spend in supermarket be x.
so, total spend in supermarket =x/2+x/3+x/10
LCM of 2,3,10=30, on solving
15x+10x+3x/30= 28x/30
means remaining: x-28x/30= 2x/30 spend on candy
2x/30=6
x=90 Ans. Hence C is the answer.
Let the total spend in supermarket be x.
so, total spend in supermarket =x/2+x/3+x/10
LCM of 2,3,10=30, on solving
15x+10x+3x/30= 28x/30
means remaining: x-28x/30= 2x/30 spend on candy
2x/30=6
x=90 Ans. Hence C is the answer.
04 Jun 2022, 06:40
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Bunuel
I like doing this question type by converting to decimals.
50% on fruits and vegetables.
33.33% on meat.
10% on bakery.
That's 93.33%.
$6 is 6.67%.
Answer choice C
If you aren't comfortable with the mental math that $6 is 6.67% of $90, you can see that we need an answer choice that's less than $100. So D and E are out. 6 is 10% of $60, not 6.67%, so A is out. 60 is 75% of 80, so 6 is 7.5% of 80, which means B is out. We only have C. 6 is 66.67% of 9, so 6 is 6.67% or 90.
