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ElenaW [278]
3 years ago
13

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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