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3 years ago

there are 36 pupils in a class 4/9 wear digital watches.how many pupils in the class do.not wear digital watches

Mathematics

2 answers:

Alex73 [517]3 years ago

7 0

Answer:

20 students

Step-by-step explanation:

No. of people are 36

No. Of people in one grp are 9

No.of people formed : 36/9

No.of people wearing digital watch in grp 1 =4

Total no. Of people wearing digital watch =4x4

Which is 16

Then, the number of people who do not wear digital watches are 36-16=20

Hence, 20 people do not wear digital watches in classroom of 36 students

olga nikolaevna [1]3 years ago

6 0

Answer:

20 do not wear digital watches

Step-by-step explanation:

$\frac{4}{9}$ × 36 = 4 × 4 = 16 ← wear digital watches , then

36 - 16 = 20 ← do not wear digital watches

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Step-by-step explanation:

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there are 36 pupils in a class 4/9 wear digital watches.how many pupils in the class do.not wear digital watches​

there are 36 pupils in a class 4/9 wear digital watches.how many pupils in the class do.not wear digital watches