A factory produces electric bulbs. If 1 out of every 10 bulbs is defective and the factory produces 630 bulbs per day. Find the number of defective bulbs produced each day.
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Hi ,
This is related to Direct proportion.
If two quantities are are so related that
an increase ( or decrease ) in one causes
a corresponding increase ( or decrease )
in other , then they are said to be in direct
proportion ( or ) direct variation.
If in two variables x and y, x /y is constant,
then x and y are said to be in direct variation.
____________________________________
Number of defective | number of bulbs
bulbs | produced
____________________________________
x1 = 1 | y1 = 10
_____________________________________
x2 = ? | y2 = 630
____________________________________
x1 / y1 = x2 / y2
1/ 10 = x2 / 630
( 1 × 630 ) / 10 = x2
63 = x2
Therefore,
Number of defective bulbs are 63 produced
each day.
I hope this helps you.
:)
This is related to Direct proportion.
If two quantities are are so related that
an increase ( or decrease ) in one causes
a corresponding increase ( or decrease )
in other , then they are said to be in direct
proportion ( or ) direct variation.
If in two variables x and y, x /y is constant,
then x and y are said to be in direct variation.
____________________________________
Number of defective | number of bulbs
bulbs | produced
____________________________________
x1 = 1 | y1 = 10
_____________________________________
x2 = ? | y2 = 630
____________________________________
x1 / y1 = x2 / y2
1/ 10 = x2 / 630
( 1 × 630 ) / 10 = x2
63 = x2
Therefore,
Number of defective bulbs are 63 produced
each day.
I hope this helps you.
:)
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