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

find a pair of square numbers which give a difference of 39
Real world Examples of inertia
Where is the midpoint of (6,11) and (10,16) Use the rules of negative numbers to calculate -5+-7--3
give the number of valence electrons for each of the following: Ba, Al, P, Se, Br, K
1.) What role do stomata play in photosynthesis? 2.) Describe the process of pollination in angiosperms.
PLEASE HELP I GIVE THANKS
Find all the powers of 3 in the range 3 through 1,000.
The remainder when x^3 - 11x + 10 is divided by (x+3) is A 52 B 16 C 4 D -24 I was doing a past paper and came across this,I know one (long) way of
what patterns are there in prime numbers
give the next term and the nth term of 8,13,18,23,28