Week4 Act2 Q2

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Anitta Antony

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Nov 5, 2020, 12:05:24 AM11/5/20

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Deb and Ananya bought 20 toys together. From these 20 toys, Deb lost 3 toys and Ananya lost 4 toys. Product of the current number of their toys is 42. Can you form an equation for Deb to know how many toys did he have initially? [Let us assume Deb initially had x

number of toys.]

−x3+13x−4=42

19x−4=42

−x2+19x−48=42

x2=42

how is ths solved ?

Anand Iyer

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Nov 5, 2020, 12:42:45 AM11/5/20

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I couldn't understand any equations you wrote. So, will start afresh.

Assuming Deb had x toys and Ananya had y toys,

x + y = 20 ==>

y = 20 - x

(x - 3) (y - 4)= 42 ==>

(x - 3) (20 - x -4) = 42 ==>

(x - 3) (16 - x) = 42 ==>

-x^2 +16x + 3x - 48 = 42 ==>

-x^2 +19x - 48 = 42

Anitta Antony

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Nov 5, 2020, 1:09:38 AM11/5/20

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