Question

A photograph measuring 6 cm in length and 8 cm in breadth is to be proportionally enlarged in such a way that its length is 21 cm. What would be the breadth of the proportionally enlarged photograph?

ans is 28cm but how?
whats the ans with explanation
plz tell me
fast plz
its urgent !!!
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Answer 1

Answer:

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

here the length has been multiplied by some factor "x"

the breadth has also been multiplied by the same factor.

we have to find the factor "x" then we can find the enlargered breath

$1) \: 6cm \times x = 21cm$

$x = 21 \div 6$

$x = 3.5$

now as the breadth is also multiplied by the same factor

$8 \times x = enlarged \: breadth$

$8 \times 3.5 = 28$

hence answer is 28