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Step-by-step explanation:
Let number of Rs 5 pen = x
Let number of Rs 3 pencil = y
Acc. To Question,
x + y = 26
=> x = 26 - y-----(1)
Acc. To Question,
5x + 3y = 100-----(2)
Put (1) in (2),
5(26 - y) + 3y = 100
130 - 5y + 3y = 100
130 - 100 = 2y
2y = 30
=> y = 15
---Put y = 15 in (1)
x = 26 - 15
=> x = 11
So, Number of pens bought by man = 11
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