1800-150-456-789
FlagBACK
Flag 7 grade maths> a disaster relief team consists of engine...
question mark

a disaster relief team consists of engineers and doctors in the ratio of 2:5
  1. if there are 18 engineers, find the number of doctors.
  2. if there are 65 doctors, find the number of engineers.

a v r hanuman , 8 Years ago
Grade 7
anser 2 Answers
Ajay Panthagani

Last Activity: 8 Years ago

let ratio of engineers and doctors be 2x:5x
therefore if there are 18 engineers
then 2x=18
          x=18/2
          x=9
then number of doctors= 5x= 5(9)=45
if there are 65 doctors
then 5x=65
          x=65/5
          x=13
then number of engineers=2x=2(13)=26

Avi

Last Activity: 8 Years ago

Since the ratio of engineers to doctors is 2:5 we can let the number of engineers to be 2x and number of doctors to be 5x
It is given that there are 18 engineers so according to the above assumption, 2x=18 and x=9
No. of doctors = 5x= 5*9 =45
The second part can be solved similarly as 5x=65 and x=13
So number of engineers = 2x= 2*13=26

Provide a better Answer & Earn Cool Goodies

star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Other Related Questions on 7 grade maths

question mark
Capital of india please tall please tall please please please tall
7 grade maths
1 Answer Available

Last Activity: 2 Years ago

question mark
The additive inverse of -3/4 is
7 grade maths
2 Answers Available

Last Activity: 3 Years ago

question mark
55% " of " 1000 divide 60% " of " 2000 =?
7 grade maths
1 Answer Available

Last Activity: 3 Years ago

question mark
Solve : (-150)div(-25)
7 grade maths
1 Answer Available

Last Activity: 3 Years ago

question mark
Convert into mixed fraction 1.008 = ?
7 grade maths
1 Answer Available

Last Activity: 3 Years ago