Answer:
150 chicken eggs broke.
Explanation:
Let chicken eggs be represented by = c
Let duck eggs be represented by = d
An egg seller ordered 600 duck eggs and chicken eggs altogether.
![c+d=600](https://img.qammunity.org/2020/formulas/mathematics/middle-school/khyp7r6varhs2ng89aklthsg8mauthwuhy.png)
The number of duck eggs was 2/5 of the total number of eggs.
=> d=
eggs.
So, c=
![600-240=360](https://img.qammunity.org/2020/formulas/mathematics/middle-school/49op3d7wt2dq14wjlq3ik1j83ukswdhagt.png)
Some chicken eggs broke during delivery and the number of duck eggs became 8/15 of the total number of eggs.
Let x eggs broke.
Remaining were
![600-x](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ex71cp6e7muoj9ld2danmj3o4tdsyfhr7u.png)
And d=
![(8)/(15)*(600-x)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/4o0be70kf003zoe3stha4g9y712lds3q1l.png)
=>
![240= (8)/(15)*(600-x)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/bmhwj423awacsqdy1i8d8cl92kkys7x1dh.png)
=>
![8(600-x)=240*15](https://img.qammunity.org/2020/formulas/mathematics/middle-school/4w4igso2caisdoed9efxd8bosprxxckqqc.png)
=>
![4800-8x=3600](https://img.qammunity.org/2020/formulas/mathematics/middle-school/5syre70wiu7lbvsff9tbzl1qzw6zh5l93l.png)
=>
![8x=1200](https://img.qammunity.org/2020/formulas/mathematics/middle-school/cwbkcsdo6hs192xlrh5if540qg5eneddyn.png)
x = 150
Hence, 150 chicken eggs broke.