Respuesta:
Explicación paso a paso:
P.A. 2/5; 11/15; 16/15
2/5=6/15
6/15; 11/15; 16/15
r=11/15-6/15=16/15-11/15=5/15=1/3
n=25
a1= 2/5
a25=?
S25=?
a25=a1+r(24)
a25=2/5+1/3(24)
a25= 2/5+8
a25=2/5+40/5
a25=42/5
S25= (a1+a25)n/2
S25= (2/5+42/5)(25)/2
S25= (44/5)(25/2)
S25= (44)(25)/(5)(2)
S25= (22)(5)
S25= 110
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Respuesta:
Explicación paso a paso:
P.A. 2/5; 11/15; 16/15
2/5=6/15
6/15; 11/15; 16/15
r=11/15-6/15=16/15-11/15=5/15=1/3
n=25
a1= 2/5
a25=?
S25=?
a25=a1+r(24)
a25=2/5+1/3(24)
a25= 2/5+8
a25=2/5+40/5
a25=42/5
S25= (a1+a25)n/2
S25= (2/5+42/5)(25)/2
S25= (44/5)(25/2)
S25= (44)(25)/(5)(2)
S25= (22)(5)
S25= 110