Question

How many square tiles of side 40 cm are needed to build the floor of a room of length 16 mand breadth 10 m ?​

Answer 1

Answer:

It is given that

Principal (P) = 5000

Rate of interest = 10%b p.a. or 5% half- yearly

Period (n) = 1

2

1

or 3 half- years

We know that

A= P(1+r/100)

n

Substituting the values

=5000(1+5/100)

3

By further calculation

= 5000×21/20×21/20×21/20

= 5788.12

Here

CI= A - P

Substituting the values

=5788.12−5000

= 788.12

Answer 2

Answer:

$(16 \times 10) \div 0.4 = 400$

400tiles required

Step-by-step explanation:

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