# Fundamentals of Numeric Computing

## CPAN 112 || Lab 01

• Please provide your answers in the boxes below each question, and do not change the text colour.
• There is no credit if you only state the final answer.
• Please keep the naming conventions requested in this lab and each question.
• Once you complete your lab, rename your word document file to the (CPAN112_LabXX_FirstName_LastName). Replace XX with the lab number (e.g. 01). Replace FirstName and LastName with your first name and last name, respectively.

It will be a 10% mark deduction if you do not follow the guidelinesmentioned above

• Set up a ratio to represent the following: 10 quarters to 12 dimes to 16 nickels
• 1 quarter = 25 cents
• 1 dime = 10 cents
• 1 nickel = 5 cents
• i.e. 250 : 120 : 80
•        25 : 12 : 8
1.

• Set up a ratio to represent the following: one-half of an hour to 18 minutes
• 1hour = 60 minutes
• i.e. 30 minutes : 18 minutes
• 30:18 = 5:3
2.

• Solve: 2.18: 1.61 = k : 4.4
• 2.18/1.61=k/4.4
• K=2.18/1.61*4.4
• K=5.96
3.

• Students, A, B, and C occupy floor space of 50 m, 70 m, and 80 m,respectively. If the total rental for the space is \$1000 per month, how much rent should student A pay?
• 1000 should be allocated to 50:70:80
• 1000/(50+70+80)
• 1000/200
• 5
• A should pay (50*5)=\$250
• B should pay (70*5)=\$350
• C should pay (80*5)=\$400
4.

• A clothing company has found that, based on past experience, \$17.50 must be spent on labour costs for every \$13.25 spent on materials. If a budget of the year 2005 is set at \$231 875.00 for materials, calculate the amount that must be budgeted for labour.
• The ratio is 17.50:13.25=k:231875
• K=17.50/13.25*231875
• K = 306250
• the amount that must be budgeted for labour = \$306250
5.

• a) \$750 is 33.3% of what amount and b) What is 1/5% of \$12150?
6.

• A buyer bought merchandise for \$2900. If he sells the merchandise at 66 2/3% above cost, how much gross profit does he make?
• The merchandise increased 66 2/3 %.
• The profit he makes is 66 2/3% of 2900
• Ie. 2900/100*66 2/3 =1933.3
• The gross profit is \$1933.3
7.

• After an increase of 8%, the new amount was \$875. What was the original amount?
• Therefore \$875 is 108% of the original amount.
• Original price = 875/108*100=\$810
8.

• A sales representative selling computer parts receives a commission of 3.5% on net sales up to \$15 000.00, 7% on the next \$6000.00, and 9% on any further sales. If his sales for a month were \$34 250.00 and sales returns were \$1055.00,what was his commission for the month?
9.

• Don Blair invested \$11 500 in a business on January 1. She withdrew \$700 on March 1, reinvested \$1800 on August 1, and withdrew \$500 on September 1. What is Don’s average monthly investment balance for the year?