Question

5. Which is a better buy?
(a) 8 m roll of black ribbon for 15.20 or 9 m roll of black ribbon for 18.90
(b) 3 packs of DVDs for 77.25 or 7 packs of DVDs for 174.04
(Hint: Calculate the price of 1 item in each to compare.)​

Answer 1

Answer:

(a)

i. 8m of roll of black ribbon = ₹15.20

1m of roll of black ribbon = ₹15.20÷8 =₹1.9

ii. 9m of roll of black ribbon = ₹18.90

1m of roll of black ribbon = ₹18.90÷9 = ₹2.1

The first option is better 8 m roll of black ribbon for 15.20

(b)

i. 3 packs of DVDs = ₹77.25

1 pack of DVD = ₹77.25÷3 = ₹25.75

ii. 7 packs of DVDs = ₹174.04

1 pack of DVD = ₹174.04 ÷ 7 = ₹24.862857142= ₹24.86

The second option is better7 packs of DVDs for 174.04

Answer 2

(a) 8m roll of black ribbon for 15 .20 is better than 9m roll of black ribbon for 18.90

(b) 7packs of DVD for 174.04 is better than 3 packs of DVD for 77.25

Step-by-step explanation:

(a)first we divide 8m÷15.20 =1.90,second we divide 9m ÷18.90=2.10

(b) divide 77.25÷3 =25.75,second divide 7÷174.04 =24.86