Question

solve the value of f1 and f2 if f1+f2=52 and the second equation is 30f1+70f2=2520???​

Answer 1

Answer:

f1 = 28, f2 = 24

Step-by-step explanation:

I used a graphing method that is a little long to explain. Our answer is

f1 = 28, f2 = 24

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Answer 2

Answer:

HOPE IR HELPS YOU..

Step-by-step explanation:

Solution :- 68 + f1 + f2 = 120 and 30f1 + 70f2 = 2520

= 68 + f1 + f2 = 120

= f1 + f2 = 120 - 68

= f1 + f2 = 52

= f1 = 52 - f2 --------- (1)

put the value of eq (1) on below problem :-

= 30f1 + 70f2 = 2520

= 30( 52 - f2 ) + 70f2 = 2520

= 1560 - 30f2 + 70f2 = 2520

= 40f2 = 2520 - 1560

= 40f2 = 960

= f2 = 960/40

= f2 = 24

put the value of f2 on eq (1)

= f1 = 52 - f2

= f1 = 52 - 24

= f1 = 28

Ans f1 = 28 , f2 = 24