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WARRIOR [948]
2 years ago
10

Original price: $0.75 Discount:? Sale price: $0.15

Mathematics
1 answer:
Masteriza [31]2 years ago
3 0

Answer:

80% off

Step-by-step explanation:

(0.15 - 0.75)/0.75 = -0.8 = -80%

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The ratio of red marbles to blue marbles in a bag is 3:4 . If there are 42 marbles in the bag. how many marbles are red?
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Answer:

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Step-by-step explanation:

Step 1

Express the fraction of each type of marble as a function of the total number of marbles as shown;

Let;

total marbles=x

red marbles=3/(3+4)=3/7x

blue marbles=4/7 x

But x=42 marbles

The total number of marbles for each type can be expressed as;

total number of red marbles=fraction of red marbles×total number of marbles

where;

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replacing;

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total number of blue marbles=fraction of blue marbles×total number of marbles

where;

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replacing;

total number of blue marbles=(4/7)×42=24 marbles

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