Arathi took 3 examinations in a year The marks obtained by her in the second and third examinations are - Maths - Linear Inequalities

Question

Arathi took 3 examinations in a year The
marks obtained by her in the second and third
examinations are more than 5 and 10 respectively
than in the first examination If her average mark
is at least 80 find the minimum mark that she
should get in the first examination?

Shruti Tyagi · Accepted Answer

Dear student,
Let the marks obtained in first exam be 'x'Marks obtained in second exam=x+5Marks obtained in third exam=x+10Average marks=sum of marks obtainedNo
 of marks⇒80=x+x+5+x+103⇒80=3x+153⇒80=x+5⇒80-5=x⇒x=75Thus marks obtained in first exam is 75
Regards

Arathi took 3 examinations in a year. The marks obtained by her in the second and third examinations are more than 5 and 10 respectively than in the first examination. If her average mark is at least 80 find the minimum mark that she should get in the first examination?

Arathi took 3 examinations in a year. The
marks obtained by her in the second and third
examinations are more than 5 and 10 respectively
than in the first examination. If her average mark
is at least 80 find the minimum mark that she
should get in the first examination?