Pertanyaan :
1. A law firm seeks to recruit top-quality experienced lawyers. The total package
offered is the sum of three separate components: a basic salary which is 1.2 times
the candidate’s current salary together with an additional $3000 for each year
worked as a qualified lawyer and an extra $1000 for every year that they are over
the age of 21. Work out a formula that could be used to calculate the total salary,
S, offered to someone who is A years of age, has E years of relevant experience
and who currently earns $N. Hence work out the salary offered to someone who is
30 years old with five years’ experience and who currently earns $150 000.
Answer:
Total salary (S) formula:
S = 1.2N + 3000E + 1000(A – 21)
Case: A = 30, E = 5, N = 150,000
S = 1.2(150,000) + 3000(5) + 1000(30 – 21)
S = 180,000 + 15,000 + 9,000 = 204,000
Answer: $204,000
2. Write down a formula for each situation:
a. A plumber has a fixed call-out charge of $80 and has an hourly rate of
$60. Work out the total charge, C, for a job that takes L hours in which the
cost of materials and parts is $K.
b. An airport currency exchange booth charges a fixed fee of $10 on all
transactions and offers an exchange rate of 1 dollar to 0.8 euros. Work out
the total charge, C, (in $) for buying x euros.
c. A firm provides 5 hours of in-house training for each of its semi-skilled
workers and 10 hours of training for each of its skilled workers. Work out
the total number of hours, H, if the firm employs a semi-skilled and b
skilled workers.
d. A car hire company charges $C a day together with an additional $c per
mile. Work out the total charge, $X, for hiring a car for d days and
travelling m miles during that time.
Status :
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Bukti :
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