Gina bought 2.5 pounds of peaches that cost $1.38 per pound at the grocery store. Amy went to the local farmer’s market and purchased 3.5 pounds of peaches at $0.98 per pound. Who spent more money, and how much more?

Gina spent more money, she spent 2 more cents than Amy.

Step-by-step explanation:

Gina:     1.38x2=$2.76    1.38/2=69 cents

2.76+69= $3.45

Amy:     0.98x3=$2.94   0.98/2=49 cents

2.94+49= $3.43

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this