Calculate the missing terms in the following proportions.

a.1:2 14=x:5 34

x=

Round to two decimal places

b.

3.75:3 14=x:4 34

x=

Round to two decimal places

2.Helen, Lucy, and Liz decided to start a web design company and made investments in the ratio of 2 : 5 : 4, respectively. After one year, if Helen increased her initial investment by 50%, Lucy decreased her initial investment of $7,600 by 25%, and Liz did not change her investment, find the new ratio of their investment, reduced to the lowest terms.

?: ? :?

3.The City of Ottawa charges $3,877 in taxes per year for a 2,100 square metre industrial shed. What taxes would Amazing Plastics Inc. have to pay if it has a 23,050 square metre shed in the same area?

Round to the nearest cent

4.How much would you receive if you convert the following?

a. US$6,500 to Canadian dollars. (US$1 = C$1.3863)

= C

Round to the nearest cent

b. C$3,200 to US dollars (US$1 = C$1.3863)

= US

Round to the nearest cent

5.Reduce the following ratio to its lowest terms and to an equivalent ratio with 1 as the smallest term.

a. 500:200:600

Lowest terms:

? :? : ?

Lowest term is 1:

?:?:?

b. 10:5:15:15

Lowest terms:

?: ? :?

Lowest term is 1:

?:?:?

c. 1.6:7.6:

654

Lowest terms:

: :

Lowest term is 1

: : :