Usha spent
34 of her money on some biscuits and
37 of her remaining money on 9 puffs. Each puff cost thrice as much as a biscuit. How many biscuits did she buy?
Biscuits |
Remaining money |
3x7 |
1x7 |
|
9 Puffs |
Left |
|
3x1 |
4x1 |
21 u |
3 u |
4 u |
Cost of 1 puff = Cost of 3 biscuits
(x9)Cost of 9 puffs = Cost of 27 biscuits
3 u = 27
1 u = 27 ÷ 3 = 9
Number of biscuits that Usha bought
= 21 u
= 21 x 9
= 189
Answer(s): 189