Step-by-step explanation:
60% of 25 :
100% = 25
1% = 25/100
= 0.25
60% = 0.25 x 60
= 15
So 15 pupils are in band.
It is 2x(x-7)+3(x-7) = (2x+3)(x-7)
For the ratio hearts to clubs it’s 5:4
For the ratio clubs to hearts it’s 4:5
For the ratio hearts to total is 5:9 I hope this helps :)
