Question

Aflati numerele a,b,c stiind ca sunt invers proportionale cu 2,5,6 si ca a-b=15

Answer 1

a , b ,c = ?

(a, b, c ) i.p. ( 2,5,6)=> 2a=5b=6c

a-b=15

2a=5b=>a=5b/2

5b/2-b=15

5b/2-2b/2=15

3b/2=15

3b=30

b=10

a-b=15<=>a-10=15=>a=25

5b=6c

5*10=6c

50=6c

c=50/6