Answer:
a) 15 big bouquets
b) 60 small bouquets
Explanation:
We are given the following information:
Number if roses in big bouquet = 36
Number of roses in small bouquet = 12
Let y be the number of big bouquet and x be the number of small bouquets.
We are given that small bouquets are four times the big bouquets.
![x = 4y](https://img.qammunity.org/2020/formulas/mathematics/middle-school/acagpmf4s9rs8bh3zegxfyggaioqi1tfhn.png)
Also, total number of roses used for arrangement = 1260
![36y + 12x =1260](https://img.qammunity.org/2020/formulas/mathematics/middle-school/afa2d92jz3gw0vkxmrqhcmpkcb8q99wx12.png)
Putting x = 4y in the above equation, we get,
![36y + 48y = 1260\\84y = 1260\\y =15](https://img.qammunity.org/2020/formulas/mathematics/middle-school/iewveg8htiv9t7sjhtdbjig3hf3jr4z9x9.png)
![x = 4* 15 = 60](https://img.qammunity.org/2020/formulas/mathematics/middle-school/1kilhezn1pjo4axfyrs119u71msareail6.png)
Thus, Jessie arranged 60 small bouquets and 15 big bouquets.