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Matrix 14 - Inverse of matrix (in hindi)
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Prakhar Shrivastava is teaching live on Unacademy Plus

Prakhar Shrivastava
INDUSTRIAL AND PRODUCTION | IIT B | NITIE | GATE - 2016 ( AIR -03, SCORE - 939/1000) |Tennis | Street plays | Foodie

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if a and b invest in the ratio5:4 after some time a withdraws some of it share .at the end of 1 year a gets profit of rs. 250 . if total profit is 650rs. then find for how much time a invest ?