Math, asked by nergizhuseynova123, 10 months ago

if 5a+3b=35 and a/b=2/5 , what is the value of a?
A 14/5
B 7/2
C 5
D 7

Answers

Answered by omsulakhe33
0

Answer:

A

Step-by-step explanation:

a/b=2/5. 5a+3b=35......... (1)

a=2b/5..... (2)

put eq (2) in (1)

  • 5 (2b/5)+3b=35
  • 2b+3b=35
  • 5b=35
  • b=7

put b=7 in eq (2)

a=2 (7)/5

a=14/5

Answered by ritikkumar74
1

Answer:a is the answer

Step-by-step explanation:froma/b=2/5

By cross multiplication method

5a=2b

b=5a/2 putting this in Eq.

5a+3b=35

5a+3(5a/2)=35

5a+15a/2=35

By LCM

25a=70

a=70/25

=14/5

HOPE IT MAY HELP YOU

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