model 2 gain lost percentage Section-Wise Topic Notes With Detailed Explanation And Example Questions

Answer: (c)

Let the CP of each pen be Rs.1.

CP of 8 pens = Rs.8

SP of 8 pens = Rs.12

Gain % = $4/8 ×100$ = 50%

Using Rule 8,

Here, x = 12, y = 8

Profit % = $({x - y}/y) × 100$

= $({12 - 8}/8) × 100$

= $4/8 × 100$ = 50%

Answer: (d)

S.P. of 33 metres of cloth

= C.P. of 33 metres of cloth +

S.P. of 11 metres of cloth

S.P. of 22 metres of cloth

= C.P. of 33 metres of cloth

Gain per cent = ${33 - 22}/22 × 100$ = 50%

Using Rule 9,

Here, x = 33, y = 11

Profit % = ${y × 100}/{x - y}$

= ${11 × 100}/{33 - 11} = {11 × 100}/22$ = 50%

Answer: (d)

Gain per cent = ${15 - 12}/12 × 100$ = 25%

Using Rule 8,

Here, x = 15, y = 12

Gain % = $({x - y}/y) × 100$

= ${15 - 12}/12 × 100 = 3/12 × 100$ = 25%

Answer: (b)

Gain % = ${18 - 15}/15 × 100$

= $3/15 × 100 = 20%$

Using Rule 8,

Here, x = 18, y = 15

Gain% = $({x - y}/y) × 100$

= $({18 - 15}/15) × 100$

= $3/15 × 100$ = 20%

Answer: (d)

If the CP of each article be Rs.1 then

CP of 4 articles = Rs.4

SP of 4 articles = Rs.5

Profit percent = ${5 - 4}/4 × 100 = 25%$

Using Rule 8,

Here, x = 5, y = 4

Profit % = $({x - y}/y) × 100$

= $({5 - 4}/4) × 100 = 100/4$ = 25%

Answer: (c)

Let the C.P. of one orange = 1

C.P. of 40 oranges = Rs.40

and S.P. of 40 oranges = Rs.50

Profit = (50 - 40) = Rs.10

Profit % = $10/40 × 100$ = 25%

Using Rule 8,

Here, x = 50, y = 40

Profit % = $({x - y}/y) × 100$

= $({50 - 40}/40) × 100$ = 25%