Question

cost of 150 envelops is ruppes 35.how many envelops can be purchase in ruppes 101.

Answer 1

in 35 rupees =150 envelopes
in 1rupee=150/35 envelopes=4 envelopes
then
in 101 rupees=4*101=432 envelopes



hope it helps 

Answer 2

envelopes of 35 is 150
envelopes of 1 is 150/35
envelopes of 101 is 101
$101 \times 150 \div 35$
432 approx