esercizi di scienza delle finanze

[corinne86]

Ciao ragazzi, sapreste aiutarmi a risolvere questo semplice e logico problema che però mi sta mandando fuori?

Lo stato ha appena costruito un ponte costato 15000 \( \displaystyle ,{d}{u}{r}{e}{r}à{u}{n}{a}\cap{o},{h}{a}{u}{n}{a}\cap{a}{c}{i}{t}à{a}\cap{u}{a}\le{d}{i}{50000}{a}{\mathtt{{r}}}{a}{v}{e}{r}{s}{a}{m}{e}{n}{t}{i}{e}{n}{o}{n}\ne{c}{e}{s}{s}{i}{t}{a}{d}{i}{m}{a}\nu{t}{e}{n}{z}{i}{o}\ne.{L}{a}{c}{u}{r}{v}{a}{d}{i}{d}{o}{m}{\quad\text{and}\quad}{a}{d}{i}{a}{\mathtt{{r}}}{a}{v}{e}{r}{s}{a}{m}{e}{n}{t}{i}è{Q}={30000}-{30000}{p}{d}{o}{v}{e}{p}è{i}{l}{p}{e}{d}{a}{g{{g{{i}}}}}{o}{e}{Q}{i}{l}\nu{m}{d}{i}{a}{\mathtt{{r}}}{a}{v}{e}{r}{s}{a}{m}{e}{n}{t}{i}.\lt{b}\frac{{r}}{\gt}{Q}{u}{a}\le{s}{a}{r}{e}{\mathbf{{e}}}{i}{l}{p}{e}{d}{a}{g{{g{{i}}}}}{o}{o}{\mathtt{{i}}}{m}{a}\le{d}{a}\chi{e}{d}{e}{r}{e}{e}{p}{e}{r}{c}{h}è?\lt{b}\frac{{r}}{\gt}{S}{e}{i}{l}{p}{o}{n}{t}{e}{n}{o}{n}{f{{o}}}{s}{s}{e}{s}{t}{a}\to{\cos{{t}}}{r}{u}{i}\to,{c}{o}{n}{s}{i}{g{{l}}}{i}{e}{r}{e}{s}{t}{e}{d}{i}{\cos{{t}}}{r}{u}{i}{r}{l}{o}?\lt{b}\frac{{r}}{\gt}{C}{o}{m}{e}{s}{i}\text{mod}{\quad\text{if}\quad}{i}{c}{h}{e}{r}{e}{\mathbf{{e}}}{l}{a}{\sec{{o}}}{n}{d}{a}{r}{i}{s}{p}{s}{e}{i}{l}{p}{o}{n}{t}{e}{\cos{{t}}}{a}{s}{s}{e}{14000}{o}{16000} \)?