Discussion

Explanation:

In 1989, the production of the Manufacturing, Mining and Quarrying, Electricity and Chemical sectors is in the ratio 20 : 15 : 10 : 15

Let the productions of these sectors in 1989 be 20x, 15x, 10x and 15x respectively.

The productions of these sectors in 1990 and 1991 are as in the following table:

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∴ Growth Rate in 1991 in the four sectors is = $\frac{65.33x-64.26x}{64.26x}\times 100$

= 1.67%

The closest option is 1.5%

Hence, option (d).

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