Question

The cost of maintaining a school is partly constant and partly varies as the number of pupils. With 50 pupils, the cost is $15,705.00 an with 40 pupils, it is $13,305.00

Answer 1

Answer:

fixed cost= $3705 & varying cost= $240

Step-by-step explanation:

let the fixed amount be x and changing amount be y

by question,

x + 50y = 15705 ....1

also by question,

x + 40y = 13305 .... 2

1 - 2 =>

10y = 2400

y = 2400/10= 240

substituting value of y in 1

x + 50 × 240 = 15705

x + 1200 = 15705

x = 15705 - 1200 = 3705

therefore, x = 3705 & y = 240