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3 years ago

If x varies directly with y and x = 2.5 when y = 10, find x when y = 16.

Mathematics

2 answers:

irina1246 [14]3 years ago

5 0

Answer:

x = 4

Step-by-step explanation:

If x varies directly with y

Directly Proportional:

$y\proto x$

$y=kx$

where, k is constant of proportionality

x = 2.5 when y = 10

$10=k\cdot 2.5$

$k=4$

Equation:

y=4x

Put y=16 and solve for x

$16=4x$

$x=4$

Hence, The value of x is 4 at y=16

aksik [14]3 years ago

4 0

Since 2.5 is a quarter of 10, u have to find a quarter of 16 which is 4. So X=4

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