Marsha bought 13/8 lb of snow peas and 31/10 lb of carrots at the market. About how many more pounds of carrots did she buy?
Since it said "About how many "
we are supposed to only estimate here, not do a detailed calculation
13/8 = 1 5/8 which is about 1 1/2 lbs of peas
31/10 = 3 1/10 or about 3 lbs of carrots
so carrots - peas = about 3 - 1 1/2 or 1 1/2 lbs more
31/10 - 13/8 = 124/40 - 65/40 = 59/40
or,
3.1 - 1.625 = 1.475
thank you oobleck
To find out how many more pounds of carrots Marsha bought, we need to subtract the weight of the snow peas from the weight of the carrots.
Marsha bought 13/8 lb of snow peas.
Marsha also bought 31/10 lb of carrots.
To subtract fractions, we need a common denominator. In this case, we can use 8 * 10 = 80 as the common denominator.
Converting 13/8 to an equivalent fraction with the denominator of 80:
13/8 * 10/10 = 130/80 lb of snow peas
Converting 31/10 to an equivalent fraction with the denominator of 80:
31/10 * 8/8 = 248/80 lb of carrots
Now, we can subtract the weight of the snow peas from the weight of the carrots:
248/80 - 130/80 = 118/80 lb
Simplifying the fraction 118/80:
118/80 = (118 ÷ 2) / (80 ÷ 2) = 59/40 lb
Therefore, Marsha bought approximately 59/40 lb more of carrots than snow peas.