RRB Group D 23-Oct-2018 Shift 3 Solved Paper

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Question : 16 of 100

Marks: +1, -0

What is the largest size of square tiles that can be used to cover the floor of a room of size

5.25 \ { m} \×4.55 \ { m} ?

$25 \ { cm}$
$55 \ { cm}$
$45 \ { cm}$
$35 \ { cm}$

Solution:

Floor size

=5.25 {m} \×4.55 {m}=525 {cm} \×

455 \ { cm}

525=3 \× 5 \× 5 \×7

455=5 \×7 \×13

{HCF}=5 \×7=35 { cm} \⇒

Tile size

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