Jawapan

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2016-02-22T19:10:04+08:00
A) Syarikat Delta
a = k
d = m
T8 = 240
S10 = 1900

T8 = 240
k + 7m = 240
k = 240 - 7m---(1)

S10 = 1900
5(2k + 9m) = 1900
2k + 9m = 1900/5
2k + 9m = 380---(2)

gantikan (1) ke dalam (2);
2k + 9m = 380
2(240 - 7m) + 9m = 380
480 - 14m + 9m = 380
5m = 100
m = 20

k = 240 - 7m
k = 240 - 7(20)
k = 240 - 140
k = 100

b) Syarikat Omega
a = 80
d = 22
Tn = a + (n-1)d

Omega = Delta
80 + 22(n-1) = 100 + 20(n-1)
80 + 22n - 22 = 100 + 20n - 20
22n + 58 = 20n + 80
22n - 20n = 80 - 58
2n = 22
n = 22/2
n = 11
1 5 1
ok dh faham
boleh tanya soalan yg lain tk?
syukur. boleh je. ^_^
soalan tu saya dh post tadi
oh, ok. sy tgh fikir. ^_^