Percentages Flashcards
House increases by 8 percent in the first year and 5 percent in the second year. To find the new value, what multiplier should be used?
Compound interest, each year changes, so you can’t add multipliers, consider them on each year.
1.08x1.05= 1.134
The price of a phone is £68.reduxes by 15%
68x0.85= £57.80
126 female MPs, this is 19.5% of the total number of MPs. Calculate male MPs
19.5%=126
1%= 126/19.5
80.5× 126/19.5= 520
A puppy weighs 16.5kg.This is 150% of its weight when born.
How much did the puppy weigh when it was born?
150%=16.5
100% value we want to find.
100 add 50=150
So divide by 100= 1.5
X times 1.5 = 16.5
5% compound interest every year.He wants it to be worth at least £9000 at the end of 3 years. What’s the smallest amount he could invest in?
100+5=1.05%
?x 9000/1.05³ = 7774.54
The number of mince pies sold increase by 60% in December compared to November. Mince pies sold in Jan is same as the ones sold in Nov. What is the percentage decrease?
Initial- 100 if value is unknown
Original is 160 compared to Jan
160-100/160 ×100 =37.5%
72.5x 1000
7250
A washing machines reduced by 20%. The sale price is £512. Original cost?
? x 0.8=512
£650
Watch terminology- a phone reduces by 30%. The phone is reduced by 252.what is the original cost?
0.3x=252
X=840
Reduction ends to a specific amount:
A phone is reduced by 30% and the remaining price is £252. Original cost?
0.7x=252
£360
A printer costs £288 once 20%Value added tax has been added. Original cost?
£240
A bus pass rises in value by 15%. It rises by an additional £24.what was cost before increase?
0.15x=24
£160
20% VAT added to a washing machine. Then to pay £600. What is original price with no VAT
1.2x=600
When you times by 10 to make whole, add it to final answer
