Question

find the class mark of class interval 60-100​

Answer 1

Answer:

80 hoga............

.....

Answer 2

The class mark of interval 60-100 is 80

Step-by-step explanation:

given class interval

60-100

formula used :

$\text {class mark }= \frac{\text {upper limit }+\text{lower limit}}{2}$

here , upper limit = 100

lower limit =60

then class mark of 60-100 is

$\text {class mark }= \frac{100+60}{2}\\\\\text {class mark }= \frac{160}{2}\\\\\text {class mark }= 80$

hence , The class mark of interval 60-100 is 80

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A class of 30 students number of boys is twice the number of girls then

ind the number of girls.​

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