tpriytwid4ianaFelto tpriytwid4ianaFelto

07-03-2017
Mathematics

contestada

A certain number is subtracted from 20. the result multiplied by 3 is equal to 45. what is the number?

Respuesta :

erinjanelle erinjanelle

07-03-2017

the correct number is 15

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H1a2r3s4h5 H1a2r3s4h5

07-03-2017

Let the number is x
so 20-x=20-x
now 3×(20-x)=45
60-3x=45
-3x=45-60
-3x=-15
x=-15/-3
x=5
So the required number is5

Answer Link

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