# Question #ab1e5

Jun 4, 2016

(a) $120$

#### Explanation:

Let Mr. Kashif should get in the next test$= x$
We know that total of $6$ tests$= \text{Average"xx"number of tests}$
Total of $6$ tests$= 50 \times 6 = 300$
$\therefore$ Total of $7$ tests$= 300 + x$

Also to maintain an average of $60$ required total of $7$ tests $= 60 \times 7 = 420$

Equating the two for $7$ tests
$300 + x = 420$
or $x = 420 - 300 = 120$