At a lightbulb factory four out of every 25 lightbulbs are defective.how many lightbulbs would you expect to be defective out of 350 light bulbs?
their are defective light bulbs out of 350 light bulbs.

14

Step-by-step explanation:

350 ÷ 25 = 14

56

Step-by-step explanation:

350 x 4/25 = 14 x 4 = 56

Let x represents the number of food tickets sold and y represents  the number of ride tickets sold:

2x + 3y = 1240

x = 2y – 10

The given equations satisfy the given conditions. There are 2 equations and 2 unknowns, so a certain solution can be found.

This can be solved using substitution,

Substituting eqn 2 to eqn 1:

2(2y – 10) + 3y =1240

2x+3y=1240

x=2y-10

2(2y-10)+3y=1240

4y-20+3y=1240

7y-20=1240

7y=1260

y=1260/7

y=180

putting y in the eq x=2y-10

x=(2×180)-10

x = 360-10

x = 350

Simplifying,

y = 180

x = 350

so the number of ride tickets sold were 180 and number of food tickets were 350.

hope it will help :)