Question

I can buy 6 envelopes for Rs 42.00. How many envelopes can I buy in Rs 28.00

Answer 1

Answer:

4 envelopes

Step-by-step explanation:

6 envelopes for Rs 42

x envelopes for Rs 28

$x = \frac{28 \times 6}{42} \\ x = 4$

Answer 2

$\huge \bold \color{green}{ \underline{ \underline \red{required \: answer : }}}$

cost of 6 envelopes = Rs. 42

then..

$\bold{cost \: of \: 1 \: envelope = \frac{42}{6} = 7}$

so cost of 1 envelope is Rs.7

now we have 28 rupees..then we can buy how many envelope..

$\bold{envelope \: buy \: in \: 28 \: rupees} \\ \bold{ = \frac{28}{cost \: of \: 1 \: envelope} } \\ \\ \bold{\implies \frac{28}{7} envelopes \: } \\ \\ \bold{ \implies \: 4 \: envelopes}$

so we can buy 4 envelopes in Rs 28:00