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Alex777 [14]
3 years ago
9

Isabella had a big bag of sweets,she ate two fifth of them on Monday,two fifth of those remaining on Tuesday,and two thirds of w

hat remaining on Wednesday.She then had 12 sweets.How many were in the bag originally?
Mathematics
1 answer:
Leno4ka [110]3 years ago
8 0

Answer:

100 sweets

Step-by-step explanation:

Let initial number of sweet = x

Monday :

2/5 of x = 2x/5

Number left = x - 2x/5 = 3x/5

Tuesday :

2/5 of remaining = 2/5 * 3x/5 = 6x/25

Number left = 3x/5 - 6/25 = 9x/25

Wednesday :

2/3 of remaining = 2/3 * 9x/25 = 18x/75

Number left = 9x/25 - 18x/75 = 9x / 75

9x/75 corresponds to 12

9x/75 = 12

Cross multiply :

9x = 12 * 75

9x = 900

x = 900 / 9

x = 100 sweets

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Answer:

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Step-by-step explanation:

The equation of a quadratic function in vertex form is given by:

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It was given in the question that the vertex of the parabola is (-1,4).

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