HELP A cinema sold 1000 tickets on a Saturday evening. Adult tickets cost £9, children’s tickets cost £5, and a total of £6680 was collected

If there are a Adult tickets and c Children tickets, write down two simultaneous equations connecting a and c.

Solve your equations to find how many tickets of each kind were sold.

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.