Question

How to estimate a 15% tip for $68.50?

Answer 1

Try it out!

Answer 2

15%=10%+5% 5%=10%/2



10% of $68.50 is $6.850

5% of $68.50 is $3.425


15% of $68.50 is $6.850+$3.425 =

Answer 3

for an estimate maybe start with $68.50~$70

10% of $70 is $7.0

5% of $70 is $3.5


15% of $70 is $7.0+$3.5 =