Question

By what number a must a given number be multiplied to decrease it by 30 percent

Answer 1

Answer:

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Answer 2

Answer:

0.7

Step-by-step explanation:

let the number to be decreased be x

let the number to be multiplied be y.

x * y = x - 30%

let x be 100

100y = 100 - ( 30%*100 )

100y = 70

y = 70/100

= 7/10

y = 0.7