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3 years ago

in an exam 90% students passed if the 15 student fail find the number of students appeared in the examination

Mathematics

2 answers:

Flura [38]3 years ago

7 0

Step-by-step explanation:

90%passed

100%-90%=10% failed

10%=15 students

100%=x students

USE CROSS METHOD

10x=1500

x=1500/10

x=150 number of students appeared in the exam.

Oliga [24]3 years ago

6 0

Answer:

150

Step-by-step explanation:

15 fail

90 percent pass

15=10 percent

135=90 percent

150

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3 years ago

At 8am,Ming Wei started travelling from Town A to Town B.At 8:40am, Ali started travelling from Town B to Town A.Mingwei's speed

Vesnalui [34]

Let's write some equations.

Mingwei's distance from Town A after $x$ hours from 8:00 is $45x$ .

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When Mingwei's distance is twice Ali's, they've met up (since their distance from Town A is twice their distance from Town B).

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3 years ago

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andrezito [222]

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san4es73 [151]

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3 years ago

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Mandarinka [93]

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Hope this helps! :)

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3 years ago

in an exam 90% students passed if the 15 student fail find the number of students appeared in the examination​

in an exam 90% students passed if the 15 student fail find the number of students appeared in the examination