Question

ranjana's mother gave her Rs 245 rupees for buying new year cards. if she got 10 rupees Cars 2 by 3 as many 5 rupees cards and one by 5 as many 15 rupee cards how many of each kind did she buy?

Answer 1

Let the no. of 10 rupees cards be x
Let the no. of 5 rupees cards be ⅔ x
Let the no. of 15 rupees cards be1/5x
A/Q
10x+5×⅔x+15×1/5x=Rs 245
=>150+50x+45x÷15=Rs 245
=>245x÷15=Rs 245
=>245x=Rs 245×15
=>x =245×15÷245
=>x =15
No. of 10 rupees cards = 15
No. of 5 rupees cards=2/3×15=10
No. of 15 rupees cards = 1/5×15=3

Answer 2

Let the no. of 10 rupees cards be x

Let the no. of 5 rupees cards be ⅔ x

Let the no. of 15 rupees cards be1/5x

A/Q

10x+5×⅔x+15×1/5x=Rs 245

=>150+50x+45x÷15=Rs 245

=>245x÷15=Rs 245

=>245x=Rs 245×15

=>x =245×15÷245

=>x =15

No. of 10 rupees cards = 15

No. of 5 rupees cards=2/3×15=10

No. of 15 rupees cards = 1/5×15=3