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Q.

What should be multiplied by −23 to get 575?


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a

15

b

25

c

−25

d

35 

answer is C.

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Detailed Solution

Let us multiply two numbers, a and b, to get the number c. So, we have Question Image. We can write Question Image, which means we divide cc by bb to obtain the value of aa. We will use this relation between multiplication and division to find the number n.
Let x be multiplied by −23 to get 575,
Question ImageQuestion ImageQuestion Image 
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