please box the answer

AW for design A and B

PW for design A and B

and the most economic decision

A new highway is to be constructed. Design A calls for a concrete pavement costing $95 per foot with a 16-year life; three paved ditches costing $3 per foot each; and four box culverts every mile, each costing $8,000 and having a 16-year life. Annual maintenance will cost $1,700 per mile; the culverts must be cleaned every four years at a cost of $550 each per mile Design B calls for a bituminous pavement costing S30 per foot with a 8-year life; two sodded ditches costing $1.70 per foot each; and two pipe culverts every mile, each costing $2,150 and having a 8-year life. The per ditch. replacement culverts will cost $2,450 each. Annual maintenance will cost $2,700 per mile; the culverts must be cleaned yearly at a cost of $235 each per mile; and the annual ditch maintenance will cost S1.65 per foot the basis of AW and w if the MARR is 6% per yea Click the icon to e the interest and annuity table for discrete compounding when the MARR is 6% per year