Animaljamdesires2121 Animaljamdesires2121
  • 02-04-2020
  • Mathematics
contestada

A store has sold 90 notebooks, which is 20% of all the
notebooks they had. How many notebooks did the store
have at first?

A) 450
B) 23
C) 108
D) 500

Respuesta :

lycheeboba
lycheeboba lycheeboba
  • 02-04-2020
Answer: 450
Explanation: 20%=20/100=1/5
Multiply 90 by the reciprocal of 1/5 which is 5
90 x 5 =450
Answer Link

Otras preguntas

solve for x: 2x^2+4x-16+=0
A mouse population starts with 2,000 mice and grows at a rate of 5% per year. The number of mice after t years can be modeled by the equation, P(t)=2000(1.05)^t
What is 68 divided by the square root of 4
A mouse population starts with 2,000 mice and grows at a rate of 5% per year. The number of mice after t years can be modeled by the equation, P(t)=2000(1.05)^t
if f(x)=|3x-4|+2, find f (-10)
how many books did Harriet beecher stowe write?
after clicking the start button on your computer screen desktop what option would you then select to examine system components you might want to modify?
Wages. JoAnn works in the publicity office at the state university. She is paid $10 an hour for the first 35 hours she works each week and $15 an hour for every
Over what period of time would you expect to see large changes in mountains,canyons,and similar features of the earth?
why did  the volcano explode