ANSWER Rs. 28 Step-by-step explanation: Given, cost of 5 pens =Rs.20 cost of 1 pen =20/5 = Rs. 4 cost of 7 such pens =4×7 =28 Reply

Answer: [tex]3 \: pens \: cost \: = 20 \: rupees \\ 1 \: pen \: cost \: = \frac{20}{3} \\ 5 \: pens \: cost \: = \frac{20}{3} \times 5 \\ = \frac{100}{3} = 33.3 \: rupees[/tex] Reply

ANSWERRs. 28

Step-by-step explanation:Given, cost of 5 pens =Rs.20

cost of 1 pen =20/5

= Rs. 4

cost of 7 such pens =4×7

=28

Answer:[tex]3 \: pens \: cost \: = 20 \: rupees \\ 1 \: pen \: cost \: = \frac{20}{3} \\ 5 \: pens \: cost \: = \frac{20}{3} \times 5 \\ = \frac{100}{3} = 33.3 \: rupees[/tex]