A new highway is to be constructed. Design A calls for a concrete pavement costing $85per foot with a20-yearlife;four paved ditches costing$3per foot each; and two box culverts every mile, each costing$8,000and having a20-year life. Annual maintenance will cost$1,700per mile; the culverts must be cleaned every five years at the cost of$350each per mile. Design B calls for a bituminous pavement costing$50per foot with a10-yearlife; four sodded ditches costing$1.40per foot each; and two pipe culverts every mile, each costing$2,200and having a10-year life. The replacement culverts will cost$2,400each. Annual maintenance will cost$2,700per mile; the culverts must be cleaned yearly at a cost of$215each per mile; and the annual ditch maintenance will cost$1.65per foot per ditch.Compare the two designs on the basis of equivalent worth per mile for a20-yearperiod. Find the most economical design on the basis of AW and PW if the MARR is8%per year.

A new highway is to be constructed. Design A calls for a concrete pavement costing $85 per foot with a 20-year life, four paved ditches costing $3 per foot each; and two box culverts every mile, each costing $8,000 and having a 20-year life. Annual maintenance will cost $1,700 per mile; the culverts must be cleaned every five years at a cost of $350 each per mile. Design B calls for a bituminous pavement costing $50 per foot with a 10-year life; four sodded ditches costing $1.40 per foot each; and two pipe culverts every mile, each costing $2,200 and having a 10-year life. The replacement culverts will cost $2,400 each. Annual maintenance will cost $2,700 per mile; the culverts must be cleaned yearly at a cost of $215 each per mile; and the annual ditch maintenance will cost $1.65 per foot per ditch. Compare the two designs on the basis of equivalent worth per mile for a 20-year period. Find the most economical design on the basis of AW and PW if the MARR is 8% per year. Click the icon to view the interest and annuity table for discrete compounding when the MARR is 8% per year. The AW value for Design A is $/mi. (Round to the nearest hundreds.) A new highway is to be constructed. Design A calls for a concrete pavement costing $85 per foot with a 20-year life, four paved ditches costing $3 per foot each; and two box culverts every mile, each costing $8,000 and having a 20-year life. Annual maintenance will cost $1,700 per mile; the culverts must be cleaned every five years at a cost of $350 each per mile. Design B calls for a bituminous pavement costing $50 per foot with a 10-year life; four sodded ditches costing $1.40 per foot each; and two pipe culverts every mile, each costing $2,200 and having a 10-year life. The replacement culverts will cost $2,400 each. Annual maintenance will cost $2,700 per mile; the culverts must be cleaned yearly at a cost of $215 each per mile; and the annual ditch maintenance will cost $1.65 per foot per ditch. Compare the two designs on the basis of equivalent worth per mile for a 20-year period. Find the most economical design on the basis of AW and PW if the MARR is 8% per year. Click the icon to view the interest and annuity table for discrete compounding when the MARR is 8% per year. The AW value for Design A is $/mi. (Round to the nearest hundreds.)