Question

13:156::17:?
(a)135
(b)270
(c)272
(d)130​

Answer 1

13 : (13 × 12) : : 17 : (17 × 16)

13 : 156 : : 17 : 272

c) 272

Answer 2

(?) = 204

Given options are not right

GIVEN :- 13:156::17:?

To Find :- (?)

SOLUTION:-

• A ratio is an ordered pair of numbers a and b which is written as a : b , which means
• $\frac{a}{b}$
• A proportion is an equation in which two ratios are equal . It is written as a : b::x : y, which means
• $\frac{a}{b} = \frac{x}{y}$

Let (?) be x

According to sums

$\frac{13}{156} = \frac{17}{?}$

By cross multiplying,

$13 \times x = 17 \times 156$

$13x = 2652$

By dividing both the side by 13

$\frac{13x}{13} = \frac{2652}{13} \\ x = 204$

Hence, x = (?) = 204

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