april1955 april1955
  • 18-07-2018
  • Mathematics
contestada

Derek's score on a test was 90 percent. He had 72 questions right. How many problems were on the test?

Respuesta :

Аноним Аноним
  • 18-07-2018

90% = 72 questions


\\Find 1%

1 % = 72 ÷ 90 = 0.8


\\Find 100%

100% = 0.8 x 100 = 80 questions


Answer: There were 80 questions

Answer Link

Otras preguntas

Factor completely 10x2 + 2x − 8
Which statement about the discovery of electrons is true? A. Electrons were discovered by experimental chemists. B. Electrons were discovered after the TV tub
Bt 1976 which if the following southern states was still controlled by reblicans
what is the divine right of kings?
Why did the soviets follow Stalin so eagerly despite his atrocities
Izracunaj opseg i povrsinu kruga upisanog u kvadrat stranice duljine 8 cm.
The doctor is very concerned about janines body composition and needs to know the exact percentage of body fat she has and where the body fat is stored. which o
If you want To present slides to fellow students or CO workers which productivity software should you use to create them
What help is Kindred willing to offer Everyman instead of going along himself? Quote the line in the poem exactly
factors of 42 that add up to 17