Question

pls............. pls...................... pls​

Answer 1

2,7,10 and 25 are in proportion.

So, 2/7=10/25

Let number x be added to each.

$\frac{2 + x}{7 + x} = \frac{10 + x}{25 + x}$

So by criss-cross.

$(2 + x)(25 + x) = (7 + x)(10 + x)$

$50 + 2x + 25x + {x}^{2} = 70 + 7x + 10x + {x}^{2}$

$27x - 17x = 70 - 50$

$10x = 20$

$x = \frac{20}{10}$

x = 2...

Answer = 2

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