Question

The cost of 35 envelops is ₹ 105. How many envelops can be bought for Rs 90?

Answer 1

Cost of 35 envelops =Rs 105
Hence the number of envelops can be bought for Rs 90 can be calculated as below
Number of envelops bought in Rs 105=35
Envelops bought in Rs 1 =$\frac{35}{105}$
Number of envelops bought in $Rs90=\frac{35}{105}\times 90$
$=30$
$\therefore$ 30 envelops can be bought in Rs 90.