Question

Find a single discount
equivalent to three successive discounts of 20%, 10% and 2.5% .​

Answer 1

Step-by-step

Successive discounts of 20% 10% 25%

1-d = (1-20%)(1-10%)(1-25%)

= 0.8 × 0.9 × 0.75

= 0.54

=(1-0.46)

d = 0.46

d% = 0.46 × 100 =46%

for 20%, 10%, 2.5%

1-d = (1-20%)(1-10%)(1-2.5%)

=0.8×0.9×0.975 =0.702

d= 1-0.702 = 0.298

d% = 0.298×100 =29.8%