1.

A fruit shop has 5 dozen oranges, 3 dozen mangoes, 6 dozen bananas their selling prices are Rs 60, Rs40, Rs30 each respectively Using matrix algebra the value of the fruits in the shop is

Answer» writing the data in the form of matrix
matrix A fruit = `12 [ 5, 3 ,6]`
`= [60, 36, 72]`
matrix B selling price=` [(60),(40),(30)] `
`total amount = A * B`
`= [60, 36, 72][(60),(40),(30)]`
`= 60*60 + 36*40 + 72*30 `
`= 3600 + 1440 + 2160`
`= 7200`Rs
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