41. What is the interest for 10 months on 90, invested at the rate of 6 per 100 (per month)? O you, who are a mirror to the face of arithmeticians, say, with the aid of the two (other requisite) known quantities, what the time in relation to that (interest) is, and what the capital is (in relation to that interest and time).
An example on treble rule-of-three.
42. Two pieces of sandal-wood, measuring 3 and 4 hastas in diameter and length respectively, are worth 8 gold coins. At this (rate) how much will be the worth of 14 (pieces of sandal-wood, each) measuring 6 and 9 hastas in diameter and length (respectively) ?
Thus ends treble rule-of-three.
An example on quadraple rule-of-thrē
[43]. A household well, measuring 5, 8 and 8 hastas in breadth, length and height (from the bottom, respectively), contain 6 vāhas of water; O you, who are learned, give out how much (water) 9 wells, (each being) 7 hastas in breadth, 60 in length and 5 in height (from the bottom, will contain ).
Thus ends the fourth subject of treatment known as Rule-of-three in Sārasaṅgraha which is a work on arithmetic by Mahāvirācārya.
43.^ The word śālinī occurring in this stanza indicates the name of the metre in which the stanza is composed, at the same time that it means 'bolonging to a house'.
