Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 9 Answered

The mean salary of 20 workers is rs 10250 if the salary of office superintendent is added the mean will increase by rs.750 find the salary of office superintendent
Asked by SANJEEV | 21 Oct, 2018, 09:47: PM
answered-by-expert Expert Answer
begin mathsize 16px style Mean space equals space fraction numerator Sum space of space observations over denominator No space of space observations end fraction rightwards double arrow Sum space of space observations space equals space Mean space space space cross times space No space of space onservations space equals space 10250 space cross times 20 space equals 205000 Now comma space No space of space observations space equals space 21 space and space Let space the space salary space of space office space superintendent space equals space straight x According space to space the space condition space in space the space question comma space we space get Mean space equals space fraction numerator Sum space of space observations over denominator No space of space observations end fraction 10250 space plus space 750 space equals space fraction numerator 205000 space plus space straight x over denominator 21 end fraction After space solving comma straight x space equals Rs. space space 26000 end style
Answered by Yasmeen Khan | 22 Oct, 2018, 12:01: PM
Multiple Choice Questions Practice Test
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×