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1 answer:
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Answer:
40% . The single reduction together is 40%.
Step-by-step explanation:
Let the bicycle cost is x before reduced price.
First 25% is reduced and again 20% further reduced.
Let the single reduction is y% if the two reduction together are equal.
Solution,
Case .1
reduction cost%
The cost of bicycle after reduction of 25% is
cost of reduction further reduction of 20% %
The new cost of bicycle is further reduction of 20% is
Case.2
if single reduction is done new cost of cycle is equal
%=
%
single reduction of a cycle is 40%
Answer:
Bren=5 years
Tom=7yrs
Sally=4 yrs
Kate=8years
Step-by-step explanation:
-Let Bren's current age be x, therefore Tom is x+2
-Let Sally's current age be y, therefore Kate is 2y
-Also, given that:
#We calculate the ages one year ago of Tom and Sally:
#Substitute for x in i;