The bar graph shows the production of salt (in lakh tonnes) by three companies A, B and C from 2016 to 2020.
The percentage increase in the production of company A in 2021 over 2020 is the same as its percentage increase in 2020 over 2019. Find the production of company A in 2021 (in lakh tonnes).
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 144
The same percentage increase is applied again, this time on the 2020 value, not the 2019 value.
Company A: 2019 \(=100\), 2020 \(=120\) lakh tonnes
Increase in 2020 \(\displaystyle=\frac{120-100}{100}\times100=20\%\)
2021 \(=120+20\%\) of 120 \(=120+24=144\) lakh tonnes