Question

(60-y)20-y×3= 280 find the value of y

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Answer 1

Answer:

14.60

Step-by-step explanation:

(60-y) × 20 - y × 3 = 280

1200 - 20y - y × 3 = 280

1200 - 21y × 3 = 280

- 21y × 3 = 280 - 1200

-21y × 3 = -920

-21y = -920/3

-21y = - 306.66

y = -306/-21

y = 14.60

Hope this will help you...