The graph below shows the average monthly change in the prices of three metals during 2014.

The graph depicts the mean monthly variation in the

cost

of

copper

,

nickel

and zinc during 2024.

Overall

, it can be seen that the

price

of

copper

was highest at the beginning,

while

in the end, the

cost

of

copper

reached to maximum .

Furthermore

, the prices of three metals showed fluctuations over the period.

To begin

with , the

price

of

nickel

in January was about six per cent it reduced to 1% in March,yet it remained constant from March to April .

Additionally

, from May to December,

nickel

demonstrated a variation in its rate . The charges of zinc were approximately positive 1% in January and rose to 3% in February,

whereas

in the next four months, the

cost

declined to -1%.From July to December, the

price

of

nickel

increased by 2%.

Conversely

, the

cost

of

copper

continued to abate from January to March amounting to -1% but remained steady in the next month .

Moreover

, the

price

of

copper

rose to 1% by September and in the next month, it illustrated fluctuation in its ratio .