Question

Shubangi has twice many 20 mrupee notes as she has 50 rupee notes. Altogether, she has 2700 rupees. How many 50 rupee note does she have?

Answer 1

Let the number of 50-rupee notes with shubhangi be x.

∴ Number of 20-rupee notes = 2x

∴ Total amount with Shubhangi

= Number of 50-rupee notes × 50 + Number of 20-rupee notes × 20

= x × 50 + 2x × 20

= 50x + 40x

= 90x

According to the given condition,

90x = 2700

∴ x = 2700/90

= 30

∴ Shubhangi has 30 notes of 50 rupees.

Answer 2

Given : Shubangi has twice many 20 rupee notes as she has 50 rupee notes. Altogether, she has 2700 rupees.

To Find : Find how many 50-rupee notes does she have ?

______________

Solution : Let the number of 50-rupee notes with shubhangi be x.

$~$

• Number of 20-rupee notes = 2x

$~$

Total amount with Shubhangi = Number of 50-rupee notes × 50 + Number of 20-rupee notes × 20

$~$

$\dag ~\underline{\frak{\pmb{According~ to ~the ~given ~question~:}}}$

$~$

$\qquad{\sf:\implies{x ~× ~50 ~+ ~2x~ ×~ 20}}$

$\qquad{\sf:\implies{50x~ +~ 40x }}$

$\qquad{\sf:\implies{\pmb{\underline{90x}}}}$

$~$

Now,

$~$

$\qquad{\sf:\implies{90x ~= ~2700}}$

$\qquad{\sf:\implies{x ~=~ \cancel\dfrac{2700}{90}}}$

$\qquad:\implies{\underline{\boxed{\frak{\pink{\pmb{x~=~30}}}}}}$★

$~$

Hence,

• Shubhangi has 30 notes of 50 rupees.