CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A person sold his watch for Rs. 144. If the percentage of his profit was equal to the cost price then the watch would have cost him

A
Rs. 100
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Rs. 90
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Rs. 85
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Rs. 80
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D Rs. 80
Let C.P.= Rs. x, S.P. = Rs. 144, Profit =x% x+x% of x=144
x+x100×x=144
x2+100x14400=0x2+180x80x14400=0
x(x+180)80(x+180)=0
(x+180)(x80)=0x=180or80
Neglecting negative value x=80.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Solving QE by Completing the Square
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon