Library, There Are 9 Rectangular Tables With 8 Pupils Each And Square Tables With 4 Pup…

library, there are 9 rectangular tables with 8 pupils each and square tables with 4 pupils each. How many square tables are needed so that 100 pupils can read at the same time

Answer:

7 square tables are needed so that 100 pupils can read at the same time.

Step-by-step explanation:

What is asked?

The number of square tables needed so that 100 pupils can read at the same time.

What are the given?

the number of rectangular tables – 9

the number of pupils in each rectangular table – 8

the number of pupils in each square table – 4

the total number of pupils – 100

What operation will be used?

Multiplication and Subtraction

What is the hidden question?

How many pupils are going to use the square tables?

What is the number sentence?

(100-9 × 8) + 4 = N

Write the solution.

(100-9 x 8) 4

= (100-72) ÷ 4

= 28 ÷ 4

= 7

7 square tables are needed so that 100 pupils can read at the same time.

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