Question

A class has 40 students .Given that 75%of them passed a mathematics test calculate the number of students who failed the test.

Answer 1

Step-by-step explanation:

...................

Answer 2

Answer:

10

Step-by-step explanation:

75% of 40 is 30

Let's start by setting up a relationship that we're solving for. If a number

x

is 75% of another number, than their ratio would be

75

100

So:

x\40=75\100

Now we cross multiply to get rid of the denominator:

100.x=75.40

100.x=300

Divide both sides by 100:

100.x\100=300\100

⋅

And are left with x:

x=30

As75 %of 40 is 30 the number of students who didnt pass is 10(25%of 40)

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