Question

15 cards cost rupees 2.25 what will be the cost of 36 such cards how many such cards can be buy in rupees 45

Answer 1

15 cards cost=2.25
1 card=2.25/15
36 cards=2.25/15×36
=5.40 rupees

2.25 costs= 1card
1 re costs=1/2.25 card
45 ru costs=1/2.25×45
=20

Answer 2

Number of Post cards in Rs. 45/- is 300

Step-by-step explanation:

It can be done easily with the application of the unitary method.

• 15 Post cards = Rs 2.25

• One Post card = $\frac {2.25}{15} = 0.15$

• Hence, 36 Post cards = $0.15 \times 36 = Rs\ 5.4 /-$

Let the no. of postcards bought in Rs. 45/- be x

Therefore, $\frac {45}{x} = 0.15$

x = $\frac {45}{0.15} = 300$

Cost of 36 Post cards is Rs. 5.4/-

Number of Post cards in Rs. 45/- is 300