Question

(With solution) please write solution ​

Answer 1

Answer:

a)

21 pens = 420

x number of pens= 360

cross multiply

x= 360×21 ÷ 420

x= 18

b)

21 pens= rs 420

15 pens= rs x

cross multiply

x= 420×15÷21

x= rs 300

Answer 2

Answer:

Your answers are :

Step-by-step explanation:

It is given to us that 21 pend cost ₹ 420

So the cost of 1 pen is ₹ 20

a) how many pens for ₹ 360

Solution :

we have 1 pen = ₹ 20

             ? pens = ₹ 360

then 360/20 = 18

So 18 pens can be bought for  ₹ 360

b) 15 pens, how much cost

Solution :

We have 1 pen  =  ₹ 20

then 15 pens = 20 x 15

so the answer is 300

The final answers are

a) 18 pens

b) ₹ 300

Hope it helps !