In 2017 the number of teachers in a school was 20. The number of teachers doubles each year. If in 2019 3/5 of the teachers are female how many male teachers are there in 2019?


Firstly the number of teachers doubles every year, so how many teachers are there in 2019?2017 = 202018 = 20 x 2 = 402019 = 40 x 2 = 80If 3/5 of the teachers are female what fraction are male?1/1-3/5 = 2/5Explanation through either drawing a circle into segments or by actually subtracting fraction.So what is 2/5 of 160?2/5 x 80 = 160/5 = 32 male teachers.Explanation: of means multiply. Either cancel down fraction beforehand i.e. diagonally dividing 80 and 5 by 5 to get 16 x 2 = 32 OR as shown above simply multiply out 2x80=160, divided by 5 is 32.

Answered by Lorna P. Maths tutor

2217 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Write (x + 1)(x + 2)(x + 3) in the form ax³ + bx² + cx + d


The population of a town in 2014 was 80058. This was a 65% increase on its population in 1994. What was the population in 1994?


Solve the equation: 13y − 5 = 9y + 27.


You are given a right triangle ABC with angle ABC = 30 degrees and AB equal 7. Then AC and BC are then extended to points D and E so that EDC is a right triangle. Find length DE if BD = 15


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences