Please solve these questions with full working

1.Three friends were making cupcakes for a party. Josh made 10 more cakes than Alice. Alice made 8 more cakes than Tom. In total they made 62 cakes. How many cakes did Tom make?

2.When 1mm of rain falls on 1m2 of the surface of a pond, 1 litre of water is collected. What surface area of the pond is needed to collect 10000 litres from a rainfall of 20mm?

Please answer ASAP

Guest Apr 11, 2017

#1**+2 **

Here is the first one:

josh = 10 + alice

alice = 8 + tom → alice - 8 = tom

josh + alice + tom = 62

Substitute:

(10 + alice) + alice + (alice - 8) = 62

10 + alice + alice + alice - 8 = 62

2 + 3(alice) = 62

alice = 60/3 = 20

alice - 8 = tom

20 - 8 = tom = 12 cakes

hectictar
Apr 11, 2017