The acid test ratio for the firm as on 31st December 2019 will be 0.85 as per the information contained under the balance sheet.
The ratio, which is derived by the division of the current assets less inventories with the current liabilities of the firm, is known as the acid-test or quick ratio.
Using the formula and given information, the acid-test ratio will be computed as,
[tex]\rm Acid\ Test\ Ratio= \dfrac{Current\ Assets\ - Inventories}{Current\ Liabilities}\\\\ Acid\ Test\ Ratio= \dfrac{150000-30000}{140000}\\\\\rm Acid\ Test\ Ratio= 0.85[/tex]
Hence, the acid-test ratio is as computed above.
Learn more about acid-test ratio here:
https://brainly.com/question/17251234
#SPJ1