Question

1. The length of one side of a triangle is 5/12 of the perimeter and a second side has length 5/28 of the perimeter

a. If these two sides have a total length of 75 centimetres, determine the triangle’s perimeter

Answer 1

141

Explanation:

`(5)/(12)`+
`(5)/(28)`=
`(50)/(84)`

75÷50=1.5

1.5×44=66

75+66=141

Answer 2

126 cm

Explanation:

• p*5/12+p*5/28=75
• 5p(1/12+1/28)=75
• p(7+3)/84=15
• 10p=15*84
• p=126 cm